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4130 Round Tubing

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2 – 3 Day turnaround on all in stock Tubing & Sheet orders.

This chromium-molybdenum alloy is one of the most widely used aircraft steels because of its combination of weldability, ease of fabrication and mild hardenability. MIL-T-6736. All stock is either American or German, unless the part number ends in 41C, in which case it is Chinese.

When ordering custom lengths: please enter the length you would like, and how many lengths of that size you’d like. EXAMPLE: Enter 4 in ‘length’ and 5 in ‘quantity’  for an order of 5 four-foot pieces with a total footage of 20ft.

8 ft maximum length shipped by UPS.

5 ft or longer UPS rates tend to increase.

4130 Steel Info

SKU: 3081 Category:
SKU Price Dimensions Buy Cart
SKU: R3/16X035-41 O D : 3/16 Wall Thickness : 0.035 I D : 0.1180 Sold By: ft Weight Per Foot : 0.0572 Price: $6.17
Length
Quantity
Qty in Stock: 123
SKU: R1/4X028-41 O D : 1/4 Wall Thickness : 0.028 I D : 0.1940 Sold By: ft Weight Per Foot : 0.0664 Price: $10.82
Length
Quantity
Qty in Stock: 124
SKU: R1/4X035-41 O D : 1/4 Wall Thickness : 0.035 I D : .180 Sold By: ft Weight Per Foot : .0804 Price: $4.11
Length
Quantity
Qty in Stock: 116
SKU: R1/4X049-41 O D : 1/4 Wall Thickness : 0.049 I D : 0.1520 Sold By: ft Weight Per Foot : 0.1052 Price: $5.50
Length
Quantity
Qty in Stock: 149
SKU: R1/4X058-41 O D : 1/4 Wall Thickness : 0.058 I D : 0.1340 Sold By: ft Weight Per Foot : 0.1189 Price: $13.60
Length
Quantity
Qty in Stock: 429
SKU: R1/4X065-41 O D : 1/4 Wall Thickness : 0.065 I D : .120 Sold By: ft Weight Per Foot : 0.1284 Price: $11.50
Length
Quantity
Qty in Stock: 241
SKU: R5/16X028-41 O D : 5/16 Wall Thickness : 0.028 I D : 0.2560 Sold By: ft Weight Per Foot : .0804 Price: $26.36
Length
Quantity
Qty in Stock: 137
SKU: R5/16X035-41 O D : 5/16 Wall Thickness : 0.035 I D : 0.243 Sold By: ft Weight Per Foot : 0.1039 Price: $12.15
Length
Quantity
Qty in Stock: 120
SKU: R5/16X049-41 O D : 5/16 Wall Thickness : 0.049 I D : 0.2150 Sold By: ft Weight Per Foot : 0.1382 Price: $7.56
Length
Quantity
Qty in Stock: 490
SKU: R5/16X058-41 O D : 5/16 Wall Thickness : 0.058 I D : 0.1950 Sold By: ft Weight Per Foot : 0.1580 Price: $7.96
Length
Quantity
Qty in Stock: 410
SKU: R5/16X065-41 O D : 5/16 Wall Thickness : 0.065 I D : 0.1820 Sold By: ft Weight Per Foot : 0.1722 Price: $10.33
Length
Quantity
Qty in Stock: 251
SKU: R5/16X083-41C O D : 5/16 Wall Thickness : 0.083 I D : 0.1465 Sold By: ft Price: $0.50
Length
Quantity
Qty in Stock: 1627
SKU: R3/8X083-41C O D : 3/8 Wall Thickness : 0.083 I D : 0.2090 Sold By: ft Weight Per Foot : 0.2588 Price: $0.50
Length
Quantity
Qty in Stock: 1826
SKU: R3/8X035-41 O D : 3/8 Wall Thickness : 0.035 I D : .305 Sold By: ft Weight Per Foot : .1271 Price: $5.07
Length
Quantity
Qty in Stock: 31
SKU: R3/8X049-41 O D : 3/8 Wall Thickness : 0.049 I D : 0.277 Sold By: ft Weight Per Foot : 0.1706 Price: $6.06
Length
Quantity
Qty in Stock: 264
SKU: R3/8X058-41 O D : 3/8 Wall Thickness : 0.058 I D : 0.259 Sold By: ft Weight Per Foot : 0.1964 Price: $3.93
Length
Quantity
Qty in Stock: 121
SKU: R3/8X065-41 O D : 3/8 Wall Thickness : 0.065 I D : 0.2490 Sold By: ft Weight Per Foot : 0.2152 Price: $7.20
Length
Quantity
Qty in Stock: 8
SKU: R3/8X095-41 O D : 3/8 Wall Thickness : 0.095 I D : 0.1850 Sold By: ft Weight Per Foot : 0.2841 Price: $23.70
Length
Quantity
Qty in Stock: 25
SKU: R7/16X049-41 O D : 7/16 Wall Thickness : 0.049 I D : 0.3400 Sold By: ft Weight Per Foot : 0.2036 Price: $5.35
Length
Quantity
Qty in Stock: 103
SKU: R7/16X058-41 O D : 7/16 Wall Thickness : 0.058 I D : 0.3220 Sold By: ft Weight Per Foot : 0.2354 Price: $10.83
Length
Quantity
Qty in Stock: 60
SKU: R7/16X065-41C O D : 7/16 Wall Thickness : 0.065 I D : 0.3070 Sold By: ft Weight Per Foot : 0.2589 Price: $0.50
Length
Quantity
Qty in Stock: 456
SKU: R7/16X120-41 O D : 7/16 Wall Thickness : 0.120 I D : 0.1970 Sold By: ft Weight Per Foot : 0.4075 Price: $0.50
Length
Quantity
Qty in Stock: 3246
SKU: R7/16X028-41 O D : 7/16 Wall Thickness : 0.028 I D : 0.3815 Sold By: ft Price: $1.00
Length
Quantity
Out of Stock
SKU: R1/2X035-41 O D : 1/2 Wall Thickness : 0.035 I D : .430 Sold By: ft Weight Per Foot : .1738 Price: $4.49
Length
Quantity
Qty in Stock: 208
SKU: R1/2X049-41 O D : 1/2 Wall Thickness : 0.049 I D : 0.4020 Sold By: ft Weight Per Foot : 0.2360 Price: $5.85
Length
Quantity
Qty in Stock: 546
SKU: R1/2X058-41 O D : 1/2 Wall Thickness : 0.058 I D : 0.384 Sold By: ft Weight Per Foot : .2738 Price: $8.53
Length
Quantity
Qty in Stock: 67
SKU: R1/2X065-41 O D : 1/2 Wall Thickness : 0.065 I D : .370 Sold By: ft Weight Per Foot : .302 Price: $7.18
Length
Quantity
Qty in Stock: 86
SKU: R1/2X083-41 O D : 1/2 Wall Thickness : 0.083 I D : 0.3340 Sold By: ft Weight Per Foot : 0.3696 Price: $11.73
Length
Quantity
Qty in Stock: 87
SKU: R1/2X095-41 O D : 1/2 Wall Thickness : 0.095 I D : 0.3100 Sold By: ft Weight Per Foot : 0.4109 Price: $12.80
Length
Quantity
Qty in Stock: 70
SKU: R1/2X120-41 O D : 1/2 Wall Thickness : 0.120 I D : 0.2600 Sold By: ft Weight Per Foot : 0.4870 Price: $10.11
Length
Quantity
Qty in Stock: 54
SKU: R9/16X035-41 O D : 9/16 Wall Thickness : 0.035 I D : 0.4920 Sold By: ft Weight Per Foot : 0.1974 Price: $8.05
Length
Quantity
Qty in Stock: 65
SKU: R9/16X049-41 O D : 9/16 Wall Thickness : 0.049 I D : 0.4640 Sold By: ft Weight Per Foot : 0.2690 Price: $7.40
Length
Quantity
Out of Stock
SKU: R9/16X065-41 O D : 9/16 Wall Thickness : 0.065 I D : 0.4320 Sold By: ft Weight Per Foot : 0.3457 Price: $12.00
Length
Quantity
Qty in Stock: 114
SKU: R9/16X120-41 O D : 9/16 Wall Thickness : 0.120 I D : 0.3220 Sold By: ft Weight Per Foot : 0.5677 Price: $13.95
Length
Quantity
Qty in Stock: 7
SKU: R5/8X028-41 O D : 5/8 Wall Thickness : 0.028 I D : 0.569 Sold By: ft Weight Per Foot : 0.1785 Price: $10.65
Length
Quantity
Qty in Stock: 150
SKU: R5/8X035-41 O D : 5/8 Wall Thickness : 0.035 I D : .555 Sold By: ft Weight Per Foot : .2205 Price: $3.72
Length
Quantity
Qty in Stock: 417
SKU: R5/8X049-41 O D : 5/8 Wall Thickness : 0.049 I D : .527 Sold By: ft Weight Per Foot : .3014 Price: $5.55
Length
Quantity
Qty in Stock: 185
SKU: R5/8X058-41 O D : 5/8 Wall Thickness : 0.058 I D : 0.509 Sold By: ft Weight Per Foot : 0.3512 Price: $5.21
Length
Quantity
Qty in Stock: 177
SKU: R5/8X065-41 O D : 5/8 Wall Thickness : 0.065 I D : 0.4950 Sold By: ft Weight Per Foot : 0.3512 Price: $5.70
Length
Quantity
Qty in Stock: 129
SKU: R5/8X095-41 O D : 5/8 Wall Thickness : 0.095 I D : 0.4350 Sold By: ft Weight Per Foot : 0.5377 Price: $9.80
Length
Quantity
Qty in Stock: 17
SKU: R5/8X120-41 O D : 5/8 Wall Thickness : 0.120 I D : 0.3850 Sold By: ft Weight Per Foot : 0.6472 Price: $5.97
Length
Quantity
Qty in Stock: 77
SKU: R5/8X083-41 O D : 5/8 Wall Thickness : 0.083 I D : 0.4590 Sold By: ft Price: $9.22
Length
Quantity
Qty in Stock: 251
SKU: R5/8X156-41 O D : 5/8 Wall Thickness : 0.1560 I D : 0.3130 Sold By: ft Weight Per Foot : 0.7814 Price: $8.50
Length
Quantity
Qty in Stock: 45
SKU: R3/4X028-41 O D : 3/4 Wall Thickness : 0.028 I D : 0.6940 Sold By: ft Weight Per Foot : 0.2159 Price: $11.34
Length
Quantity
Qty in Stock: 54
SKU: R3/4X035-41 O D : 3/4 Wall Thickness : 0.035 I D : .680 Sold By: ft Weight Per Foot : .2673 Price: $4.75
Length
Quantity
Qty in Stock: 438
SKU: R3/4X049-41 O D : 3/4 Wall Thickness : 0.049 I D : .6520 Sold By: ft Weight Per Foot : .3668 Price: $3.59
Length
Quantity
Qty in Stock: 520
SKU: R3/4X058-41 O D : 3/4 Wall Thickness : 0.058 I D : .634 Sold By: ft Weight Per Foot : .4287 Price: $4.06
Length
Quantity
Qty in Stock: 202
SKU: R3/4X065-41 O D : 3/4 Wall Thickness : 0.065 I D : .620 Sold By: ft Weight Per Foot : .4755 Price: $5.38
Length
Quantity
Qty in Stock: 185
SKU: R3/4X095-41 O D : 3/4 Wall Thickness : 0.095 I D : 0.5600 Sold By: ft Weight Per Foot : 0.6646 Price: $11.79
Length
Quantity
Qty in Stock: 62
SKU: R3/4X120-41 O D : 3/4 Wall Thickness : 0.120 I D : 0.5100 Sold By: ft Weight Per Foot : 0.8074 Price: $9.95
Length
Quantity
Qty in Stock: 2
SKU: R3/4X156-41 O D : 3/4 Wall Thickness : 0.1560 I D : 0.4370 Sold By: ft Weight Per Foot : 0.9897 Price: $10.50
Length
Quantity
Qty in Stock: 59
SKU: R3/4X188-41 O D : 3/4 Wall Thickness : 0.188 I D : .374 Sold By: ft Weight Per Foot : 1.1260 Price: $12.54
Length
Quantity
Qty in Stock: 111
SKU: R7/8X035-41 O D : 7/8 Wall Thickness : 0.035 I D : .805 Sold By: ft Weight Per Foot : .3140 Price: $5.41
Length
Quantity
Qty in Stock: 319
SKU: R7/8X049-41 O D : 7/8 Wall Thickness : 0.049 I D : .777 Sold By: ft Weight Per Foot : .4323 Price: $5.61
Length
Quantity
Qty in Stock: 11
SKU: R7/8X058-41 O D : 7/8 Wall Thickness : 0.058 I D : .759 Sold By: ft Weight Per Foot : .5061 Price: $5.46
Length
Quantity
Qty in Stock: 187
SKU: R7/8X065-41 O D : 7/8 Wall Thickness : 0.065 I D : 0.745 Sold By: ft Weight Per Foot : 0.5623 Price: $5.37
Length
Quantity
Qty in Stock: 76
SKU: R7/8X083-41 O D : 7/8 Wall Thickness : 0.083 I D : 0.7090 Sold By: ft Weight Per Foot : 0.7021 Price: $7.21
Length
Quantity
Qty in Stock: 9
SKU: R7/8X095-41 O D : 7/8 Wall Thickness : 0.095 I D : 0.6850 Sold By: ft Weight Per Foot : 0.7914 Price: $14.41
Length
Quantity
Qty in Stock: 18
SKU: R7/8X120-41 O D : 7/8 Wall Thickness : 0.120 I D : 0.6350 Sold By: ft Weight Per Foot : 0.9676 Price: $7.44
Length
Quantity
Qty in Stock: 4
SKU: R7/8X188-41 O D : 7/8 Wall Thickness : 0.188 I D : .499 Sold By: ft Weight Per Foot : 1.3790 Price: $13.30
Length
Quantity
Qty in Stock: 26
SKU: R1X028-41 O D : 1 Wall Thickness : 0.028 Sold By: ft Price: $11.46
Length
Quantity
Out of Stock
SKU: R1X035-41 O D : 1 Wall Thickness : 0.035 I D : .930 Sold By: ft Weight Per Foot : 0.3607 Price: $4.81
Length
Quantity
Qty in Stock: 473
SKU: R1X049-41 O D : 1 Wall Thickness : 0.049 I D : .902 Sold By: ft Weight Per Foot : .4977 Price: $4.16
Length
Quantity
Qty in Stock: 204
SKU: R1X058-41 O D : 1 Wall Thickness : 0.058 I D : 0.8840 Sold By: ft Weight Per Foot : .5835 Price: $5.39
Length
Quantity
Qty in Stock: 127
SKU: R1X065-41 O D : 1 Wall Thickness : 0.065 I D : .870 Sold By: ft Weight Per Foot : .6491 Price: $4.63
Length
Quantity
Qty in Stock: 670
SKU: R1X083-41 O D : 1 Wall Thickness : 0.083 I D : 0.8340 Sold By: ft Weight Per Foot : 0.8129 Price: $6.96
Length
Quantity
Qty in Stock: 373
SKU: R1X095-41 O D : 1 Wall Thickness : 0.095 I D : 0.810 Sold By: ft Weight Per Foot : 0.9182 Price: $6.55
Length
Quantity
Qty in Stock: 184
SKU: R1X120-41 O D : 1 Wall Thickness : 0.120 I D : 0.7600 Sold By: ft Weight Per Foot : 1.1260 Price: $10.07
Length
Quantity
Qty in Stock: 100
SKU: R1X156-41 O D : 1 Wall Thickness : 0.1560 I D : 0.6870 Sold By: ft Weight Per Foot : 1.4060 Price: $21.65
Length
Quantity
Qty in Stock: 92
SKU: R1X188-41 O D : 1 Wall Thickness : 0.188 I D : .625 Sold By: ft Weight Per Foot : 1.6300 Price: $13.15
Length
Quantity
Qty in Stock: 28
SKU: R1X250-41 O D : 1 Wall Thickness : 0.250 I D : .499 Sold By: ft Price: $13.63
Length
Quantity
Qty in Stock: 29
SKU: R1-1/8X035-41 O D : 1-1/8 Wall Thickness : 0.035 I D : 1.0550 Sold By: ft Weight Per Foot : 0.4074 Price: $10.95
Length
Quantity
Out of Stock
SKU: R1-1/8X049-41 O D : 1-1/8 Wall Thickness : 0.049 I D : 1.0270 Sold By: ft Weight Per Foot : 0.5631 Price: $4.88
Length
Quantity
Qty in Stock: 72
SKU: R1-1/8X058-41 O D : 1-1/8 Wall Thickness : 0.058 I D : 1.009 Sold By: ft Weight Per Foot : .6609 Price: $5.89
Length
Quantity
Qty in Stock: 190
SKU: R1-1/8X065-41 O D : 1-1/8 Wall Thickness : 0.065 I D : 0.995 Sold By: ft Weight Per Foot : 0.7359 Price: $6.16
Length
Quantity
Qty in Stock: 94
SKU: R1-1/8X095-41 O D : 1-1/8 Wall Thickness : 0.095 I D : 0.9350 Sold By: ft Weight Per Foot : 1.0450 Price: $7.76
Length
Quantity
Qty in Stock: 140
SKU: R1-1/8X120-41 O D : 1-1/8 Wall Thickness : 0.120 I D : 0.8850 Sold By: ft Weight Per Foot : 1.2880 Price: $12.36
Length
Quantity
Qty in Stock: 89
SKU: R1-1/8X250-41 O D : 1-1/8 Wall Thickness : 0.250 I D : .625 Sold By: ft Weight Per Foot : 2.3880 Price: $24.10
Length
Quantity
Qty in Stock: 19
SKU: R1-1/4X035-41 O D : 1-1/4 Wall Thickness : 0.035 I D : 1.180 Sold By: ft Weight Per Foot : 0.4542 Price: $10.85
Length
Quantity
Qty in Stock: 98
SKU: R1-1/4X049-41 O D : 1-1/4 Wall Thickness : 0.049 I D : 1.152 Sold By: ft Weight Per Foot : 0.6285 Price: $8.07
Length
Quantity
Qty in Stock: 99
SKU: R1-1/4X058-41 O D : 1-1/4 Wall Thickness : 0.058 I D : 1.134 Sold By: ft Weight Per Foot : .7384 Price: $8.06
Length
Quantity
Qty in Stock: 112
SKU: R1-1/4X065-41 O D : 1-1/4 Wall Thickness : 0.065 I D : 1.120 Sold By: ft Weight Per Foot : 0.8226 Price: $6.31
Length
Quantity
Qty in Stock: 641
SKU: R1-1/4X083-41 O D : 1-1/4 Wall Thickness : 0.083 I D : 1.0840 Sold By: ft Weight Per Foot : 1.0340 Price: $12.18
Length
Quantity
Qty in Stock: 64
SKU: R1-1/4X095-41 O D : 1-1/4 Wall Thickness : 0.095 I D : 1.0600 Sold By: ft Weight Per Foot : 1.1720 Price: $11.36
Length
Quantity
Qty in Stock: 164
SKU: R1-1/4X120-41 O D : 1-1/4 Wall Thickness : 0.120 I D : 1.0100 Sold By: ft Weight Per Foot : 1.4480 Price: $11.45
Length
Quantity
Out of Stock
SKU: R1-1/4X156-41 O D : 1-1/4 Wall Thickness : 0.1560 I D : 0.9380 Sold By: ft Weight Per Foot : 1.8230 Price: $23.29
Length
Quantity
Qty in Stock: 65
SKU: R1-1/4X250-41 O D : 1-1/4 Wall Thickness : 0.250 I D : .750 Sold By: ft Weight Per Foot : 2.6700 Price: $24.55
Length
Quantity
Qty in Stock: 55
SKU: R1-3/8X035-41 O D : 1-3/8 Wall Thickness : 0.035 I D : 1.3050 Sold By: ft Weight Per Foot : 0.5009 Price: $9.09
Length
Quantity
Qty in Stock: 46
SKU: R1-3/8X049-41 O D : 1-3/8 Wall Thickness : 0.049 I D : 1.2770 Sold By: ft Weight Per Foot : 0.6939 Price: $13.46
Length
Quantity
Qty in Stock: 59
SKU: R1-3/8X058-41 O D : 1-3/8 Wall Thickness : 0.058 I D : 1.259 Sold By: ft Weight Per Foot : 0.8158 Price: $7.09
Length
Quantity
Qty in Stock: 51
SKU: R1-3/8X065-41 O D : 1-3/8 Wall Thickness : 0.065 I D : 1.2450 Sold By: ft Weight Per Foot : 0.9094 Price: $8.82
Length
Quantity
Out of Stock
SKU: R1-3/8X095-41 O D : 1-3/8 Wall Thickness : 0.095 I D : 1.1850 Sold By: ft Weight Per Foot : 1.2990 Price: $9.07
Length
Quantity
Qty in Stock: 79
SKU: R1-3/8X120-41 O D : 1-3/8 Wall Thickness : 0.120 I D : 1.1350 Sold By: ft Weight Per Foot : 1.6080 Price: $13.65
Length
Quantity
Qty in Stock: 63
SKU: R1-1/2X035-41 O D : 1-1/2 Wall Thickness : 0.035 I D : 1.4300 Sold By: ft Weight Per Foot : 0.5476 Price: $12.60
Length
Quantity
Qty in Stock: 69
SKU: R1-3/8X250-41 O D : 1-3/8 Wall Thickness : 0.250 I D : 1.125 Sold By: ft Weight Per Foot : 2.7300 Price: $1.00
Length
Quantity
Out of Stock
SKU: R1-1/2X049-41 O D : 1-1/2 Wall Thickness : 0.049 I D : 1.402 Sold By: ft Weight Per Foot : 0.7593 Price: $9.82
Length
Quantity
Qty in Stock: 177
SKU: R1-1/2X058-41 O D : 1-1/2 Wall Thickness : 0.058 I D : 1.3840 Sold By: ft Weight Per Foot : 0.8932 Price: $9.55
Length
Quantity
Qty in Stock: 134
SKU: R1-1/2X065-41 O D : 1-1/2 Wall Thickness : 0.065 I D : 1.370 Sold By: ft Weight Per Foot : 0.9962 Price: $8.62
Length
Quantity
Qty in Stock: 152
SKU: R1-1/2X083-41 O D : 1-1/2 Wall Thickness : 0.083 I D : 1.3340 Sold By: ft Weight Per Foot : 1.2560 Price: $11.18
Length
Quantity
Qty in Stock: 109
SKU: R1-1/2X095-41 O D : 1-1/2 Wall Thickness : 0.095 I D : 1.3100 Sold By: ft Weight Per Foot : 1.4260 Price: $15.16
Length
Quantity
Out of Stock
SKU: R1-1/2X120-41 O D : 1-1/2 Wall Thickness : 0.120 I D : 1.260 Sold By: ft Weight Per Foot : 1.769 Price: $13.38
Length
Quantity
Qty in Stock: 88
SKU: R1-1/2X188-41 O D : 1-1/2 Wall Thickness : 0.188 I D : 1.125 Sold By: ft Weight Per Foot : 2.6340 Price: $16.73
Length
Quantity
Qty in Stock: 54
SKU: R1-1/2X188-41C O D : 1-1/2 Wall Thickness : 0.188 I D : 1.125 Sold By: ft Weight Per Foot : 2.6340 Price: $1.00
Length
Quantity
Out of Stock
SKU: R1-5/8X049-41 O D : 1-5/8 Wall Thickness : 0.049 I D : 1.5270 Sold By: ft Weight Per Foot : 0.8248 Price: $12.40
Length
Quantity
Qty in Stock: 27
SKU: R1-5/8X065-41 O D : 1-5/8 Wall Thickness : 0.065 I D : 1.4950 Sold By: ft Weight Per Foot : 1.4950 Price: $12.15
Length
Quantity
Qty in Stock: 276
SKU: R1-5/8X095-41 O D : 1-5/8 Wall Thickness : 0.095 I D : 1.4350 Sold By: ft Weight Per Foot : 1.5520 Price: $12.55
Length
Quantity
Qty in Stock: 5
SKU: R1-5/8X120-41 O D : 1-5/8 Wall Thickness : 0.120 I D : 1.3850 Sold By: ft Weight Per Foot : 1.9290 Price: $16.92
Length
Quantity
Out of Stock
SKU: R1-5/8X156-41 O D : 1-5/8 Wall Thickness : 0.1560 I D : 1.3120 Sold By: ft Weight Per Foot : 2.4470 Price: $15.07
Length
Quantity
Qty in Stock: 20
SKU: R1-5/8X188-41 O D : 1-5/8 Wall Thickness : 0.188 I D : 1.250 Sold By: ft Weight Per Foot : 2.8850 Price: $18.35
Length
Quantity
Out of Stock
SKU: R1-5/8X083-41 O D : 1-5/8 Wall Thickness : 0.083 I D : 1.439 Sold By: ft Weight Per Foot : 1.200 Price: $9.03
Length
Quantity
Qty in Stock: 629
SKU: R1-3/4X049-41 O D : 1-3/4 Wall Thickness : 0.049 I D : 1.6520 Sold By: ft Weight Per Foot : 0.8902 Price: $9.11
Length
Quantity
Qty in Stock: 72
SKU: R1-3/4X058-41 O D : 1-3/4 Wall Thickness : 0.058 I D : 1.6340 Sold By: ft Weight Per Foot : 1.0480 Price: $11.38
Length
Quantity
Qty in Stock: 68
SKU: R1-3/4X065-41 O D : 1-3/4 Wall Thickness : 0.065 I D : 1.6200 Sold By: ft Weight Per Foot : 1.1700 Price: $10.16
Length
Quantity
Qty in Stock: 100
SKU: R1-3/4X095-41 O D : 1-3/4 Wall Thickness : 0.095 I D : 1.5600 Sold By: ft Weight Per Foot : 1.6790 Price: $12.87
Length
Quantity
Qty in Stock: 79
SKU: R1-3/4X120-41 O D : 1-3/4 Wall Thickness : 0.120 I D : 1.5100 Sold By: ft Weight Per Foot : 2.0890 Price: $12.91
Length
Quantity
Out of Stock
SKU: R1-3/4X188-41 O D : 1-3/4 Wall Thickness : 0.188 I D : 1.375 Sold By: ft Weight Per Foot : 3.1360 Price: $18.43
Length
Quantity
Out of Stock
SKU: R2X049-41 O D : 2 Wall Thickness : 0.049 I D : 1.9020 Sold By: ft Weight Per Foot : 1.0210 Price: $23.86
Length
Quantity
Qty in Stock: 116
SKU: R2X065-41 O D : 2 Wall Thickness : 0.065 I D : 1.8700 Sold By: ft Weight Per Foot : 1.3430 Price: $10.34
Length
Quantity
Qty in Stock: 247
SKU: R2X095-41 O D : 2 Wall Thickness : 0.095 I D : 1.8100 Sold By: ft Weight Per Foot : 1.9330 Price: $13.79
Length
Quantity
Qty in Stock: 67
SKU: R2X120-41 O D : 2 Wall Thickness : 0.120 I D : 1.7600 Sold By: ft Weight Per Foot : 2.4090 Price: $16.76
Length
Quantity
Qty in Stock: 103
SKU: R2X188-41 O D : 2 Wall Thickness : 0.188 I D : 1.6240 Sold By: ft Weight Per Foot : 3.6380 Price: $14.95
Length
Quantity
Qty in Stock: 63
SKU: R2-1/4X120-41 O D : 2 1/4 Wall Thickness : 0.120 I D : 2.0100 Sold By: ft Weight Per Foot : 2.7300 Price: $14.09
Length
Quantity
Qty in Stock: 93
SKU: R2-1/4X250-41 O D : 2 1/4 Wall Thickness : 0.250 I D : 1.750 Sold By: ft Weight Per Foot : 5.3400 Price: $33.40
Length
Quantity
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SKU: R2-1/2X120-41 O D : 2 1/2 Wall Thickness : 0.120 I D : 2.2600 Sold By: ft Weight Per Foot : 3.0500 Price: $22.28
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SKU: R2-1/2X250-41 O D : 2 1/2 Wall Thickness : 0.250 I D : 2 Sold By: ft Weight Per Foot : 6.0080 Price: $21.51
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Description

 4130 Tubing sizes and specifications:

OD: .125” – 2.250”

OD Tolerance:  +/- .005″ (up to 1.500″ OD),  to +/- .010″ (above 1.500″ OD)

Wall Range: 0.02″ to 0.250″

Wall Tolerance:  +/- 10% (For ID’s Over .500″) to +/- 15% (for ID’s under .500″)

Specifications: AMS-T-6736A,   AMS-6371, AMS -6360, MIL-T-6736B Quality Assurance Certification:  ISO/TS 16949:2012

 

4130 Steel (Chromoly): Properties and Applications

4130 steel, otherwise known as Chromoly or chromium molybdenum steel alloy, is made with 0.8 to 1.1% chromium and 0.15 to 0.25% molybdenum as strengthening agents.

Its steel properties make it a versatile metal, especially mechanical properties such as high ductility, good weldability, and machinability.

This article provides an overview of 4130 steel properties, and some of the manufacturing processes, treatments and typical applications.

It covers the main physical and mechanical properties to help you decide if Chromoly is a suitable material for your specific application.

There are pros and cons to the different types of heat treatment available when it comes to 4130 steel. This article describes the different heat treatment processes, namely annealing, normalizing, hardening, and tempering.

What is Chromoly (4130 Steel)?

Chromoly is a low-alloy steel that is strengthened by its main alloying elements, chromium and molybdenum – thus the name Chromoly.

It belongs to the 41xx steel alloy family. Its strength-to-weight ratio is higher than standard stainless steel or mild carbon steel. This allows for lighter material while maintaining high strength.

However, Chromoly is more brittle than mild steel. Still, it is very useful in a wide array of applications. Due to its low carbon content, it can be easily welded using both TIG welding and MIG welding.

Four-digit AISI (American Iron and Steel Institute) numbers are used to designate alloy steels. 41xx is a family of steel alloys, specified by the Society of Automotive Engineers (SAE).

Equivalent standards of 4130 steel include ASTM A1031 Grade 4130, DIN 1.7214, AFNOR 25CrMo4, BS 25CrMo4, EN 1.7214, and UNS G41300.

Applications of Chromoly (4130 Steel)

4130 steel sheets and coils are very hard with high strength and great weldability. That’s why they are widely used for:

  • Military aircraft
  • Commercial jets
  • Automotive
  • Machine tools
  • Hydraulics
  • Motorsports
  • Aerospace
  • Welded tubing (especially in the oil and gas industries)

Steel properties also make Chromoly ideal for fabricating car parts and machine components.

Forging 4130 steel

AISI 4130 steel is forged at a temperature between 950 °C and 1230 °C. If the temperature is at the lower end during the finishing stage, the grain of the steel alloy will be finer.

If the temperature is too low at forging it may affect the uniformity in parts of the structure creating the need for normalisation before heat treating the steel.

Heat treatment of 4130 steel

The reason for heat treatment is to prepare the alloy for machining and to enhance 4130 steel properties. There are four main ways to heat treat steel alloy: annealing, normalising, hardening, and tempering.

Annealing 4130 steel

Once 4130 steel has been forged into parts, sheets or coils, it may be annealed straightaway.

It is transferred from the forge into a furnace and kept at a temperature of approximately 860 °C. It is then held there for a set amount of time until the furnace cools down.

The main reason to anneal 4130 steel is to prepare it for machining. The resulting structure obtained by annealing the steel alloy makes it ideal for forming simple shapes, e.g. sheets or coils.

Sometimes a spheroidizing annealing process at 750 °C would be needed if the cooling temperature hasn’t been uniformed across the metal, which results in an uneven structure. Spheroidizing annealing is a slow cooling process that transforms the carbides into spherical shapes.

Normalizing 4130 steel

The normalizing process heats the steel to a higher temperature than annealing, typically to 900 °C, but this figure can vary by 10 °C either way depending on preferred production outcomes. Sometimes, normalizing may take place on rolled or forged steel to condition it before heat treatment.

If this is the case, say before the steel is hardened and tempered, the higher temperature value is used, i.e. 910 °C. If normalizing is to be the final treatment, then 890 °C would be used.

The process uses such a high temperature in order to create the conditions for transforming the steel from ferrite to austenite, to be later air-cooled until it’s finished.

Hardening 4130 steel

The objective of hardening heat treatment is to alter 4130 steel properties by increasing its hardness. It also increases the tensile strength and brittleness of the steel. 4130 steel hardening treatment creates martensite in the alloy post-quenching.

The steel is normally austenitized to transform all micro constituents to austenite in the range of 815 °C to 870 °C.

Tempering 4130 steel

The main purpose of tempering is to relieve stress from the metal after hardening. It also starts the process of creating the required mechanical properties.

The temperature for the tempering process depends on the properties desired. In many cases, 4130 steel alloy manufacturers experiment with different tempering temperatures to yield various results.

 

Machinability of Chromoly

Chromoly properties make it straightforward to machine conventionally unless it has been significantly hardened.

Annealed 4130 has a machinability rating of 72%, which is increased if further hardening takes place due to the formation of martensite.

Weldability of Chromoly

4130 steel is easy to weld due to its low carbon content. This makes it popular in sheet, coil, or tube form as it can be used to fabricate sections of aircraft or pipework for the oil and gas industry.

4130 steel properties

Here are the values for some of the main properties of Chromoly:

  • Density – 7.85 g/cm3
  • Hardness – 217 (Brinell scale) – 95 (Rockwell B)
  • Ultimate Tensile Strength – 540 MPa
  • Yield Tensile Strength – 460 MPa
  • Modulus of Elasticity – 205 GPa
  • Machinability – 72% (in annealed state)

Conclusion

4130 steel properties make it the perfect choice for automotive, aeronautic and aerospace engineering as it is tough, easily machined and weldable. When heat-treated, Chromoly develops mechanical properties that make it a very strong metal, although it can lose some of its machinability.

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Q & A

Note: Wicks personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon wihout consulting a qualified technician. Wicks assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
What is the best lengths to ship shipping cost wise? Jim D asked on March 14, 2024

The cheapest option is 4' and under. Between 4' & 7' is next. 8' is the most expensive for UPS & Fedex. Anything over 8' has to go by truck and is quite expensive, and we would need to work up a quote.

Keith Gibbs answered on March 14, 2024 store manager
(0) (0)
What are the tolerances on the OD of the 4130 tube? Adam W asked on March 14, 2024

Tolerances on tubing vary depending on the O.D. and wall thickness. If you are needing precise tolerances it would be best to call us and we can look that up for you.

Keith Gibbs answered on March 14, 2024 store manager
(0) (0)
What welding rod/wire is used for 4130? James K asked on March 14, 2024

A common filler metal choice for welding chrome-moly is ER80S-D2 . This filler metal is capable of producing welds that approximate the strength of the 4130. ER70S-2 is also an acceptable alternative to ER80S-D2, although weld strength will be slightly lower.

Keith Gibbs answered on March 14, 2024 store manager
(0) (0)
What is the mil-spec on your 4130 tubing? Eric H asked on March 14, 2024

AMS-T-6736B

Keith Gibbs answered on March 14, 2024