4130 Alloy Steel
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Alloy Steel 4130 offers good strength, and weldability without compromising steel abrasion and impact resistance. Easy to machine and hot work as well as cold work in the annealed state, it becomes significantly more challenging once the steel is hardened. 4130 steel can also be easily welded. It is typically used in structural applications, including gears, fasteners, and some aircraft exterior.
We offer 4130 in round tube, seamless round tube, square tube, hex bar, cold drawn hex bar, cold finish hex bar, rectangle bar, normalized rectangle bar, round bar, sheet plate, annealed sheet plate, normalized sheet plate, and sample packs.
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Relevant Knowledge Hub Resources: 5 Reasons to Cut-to-Size | The Weldability of Steel
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SALE!
Huge Savings on Overstock Lengths
Dimensions
- Outer Diameter: 1"
- Wall: 0.049"
- Inner Diameter: 0.902"
Dimensions
- Outer Diameter: 0.625"
- Wall: 0.049"
- Inner Diameter: 0.527"
Dimensions
- Outer Diameter: 1.125"
- Wall: 0.058"
- Inner Diameter: 1.009"
Dimensions
- Outer Diameter: 0.875"
- Wall: 0.065"
- Inner Diameter: 0.745"
Dimensions
- Outer Diameter: 0.75"
- Wall: 0.058"
- Inner Diameter: 0.634"
Dimensions
- Outer Diameter: 0.75"
- Wall: 0.049"
- Inner Diameter: 0.652"
Dimensions
- Outer Diameter: 0.313"
- Wall: 0.058"
- Inner Diameter: 0.197"
Dimensions
- Outer Diameter: 0.5"
- Wall: 0.035"
- Inner Diameter: 0.43"
Dimensions
- Outer Diameter: 0.375"
- Wall: 0.049"
- Inner Diameter: 0.277"
Dimensions
- Outer Diameter: 0.5"
- Wall: 0.058"
- Inner Diameter: 0.384"
Dimensions
- Outer Diameter: 0.375"
- Wall: 0.035"
- Inner Diameter: 0.305"
Dimensions
- Outer Diameter: 0.438"
- Wall: 0.058"
- Inner Diameter: 0.322"
SALE!
Huge Savings on Overstock Lengths - Ships from CT
Dimensions
- Outer Diameter: 1"
- Wall: 0.125"
- Inner Diameter: 0.75"
Dimensions
- Outer Diameter: 1"
- Wall: 0.035"
- Inner Diameter: 0.93"
Dimensions
- Outer Diameter: 0.75"
- Wall: 0.035"
- Inner Diameter: 0.68"
Dimensions
- Outer Diameter: 0.375"
- Wall: 0.028"
- Inner Diameter: 0.319"
- Dia. 0.125"
Alloy Steel Round Bar 4130-Normalized Cold Finish
Select...
- 12″ (1 ft.) - $3.00 ea.
- 24″ (2 ft.) - $3.12 ea.
-
36″ (3 ft.)
- $3.63 ea.
- 48″ (4 ft.) - $3.99 ea.
- 72″ (6 ft.) - $5.99 ea.
- 96″ (8 ft.) - $8.79 ea.
- 144″ (12 ft.) - $11.98 ea.
- Custom Cut
Starting at
$3.00
$3.00
$3.00 ea.
SALE!
Huge Savings on Overstock Lengths
- OD 1" |
- Wall 0.049" |
- ID 0.902"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $10.72 ea.
- 12″ (1 ft.) - $7.04 ea.
- 24″ (2 ft.) - $24.52 ea.
-
36″ (3 ft.)
- $63.34 ea.
- 48″ (4 ft.) - $75.28 ea.
- 72″ (6 ft.) - $104.65 ea.
- 96″ (8 ft.) - $132.19 ea.
- 240″ (20 ft.) - $312.12 ea.
- Custom Cut
Starting at
$10.72
$10.72
$10.72 ea.
- Height 0.375" |
- Wall 0.035"
Alloy Steel Square Tube 4130
Select...
- 12″ (1 ft.) - $10.24 ea.
- 24″ (2 ft.) - $20.47 ea.
-
36″ (3 ft.)
- $30.71 ea.
- 48″ (4 ft.) - $40.93 ea.
- 72″ (6 ft.) - $62.05 ea.
- 96″ (8 ft.) - $82.52 ea.
- 240″ (20 ft.) - $205.97 ea.
Starting at
$10.24
$10.24
$10.24 ea.
- OD 0.625" |
- Wall 0.049" |
- ID 0.527"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $9.80 ea.
- 24″ (2 ft.) - $18.91 ea.
-
36″ (3 ft.)
- $26.77 ea.
- 48″ (4 ft.) - $32.17 ea.
- 72″ (6 ft.) - $45.08 ea.
- 96″ (8 ft.) - $57.32 ea.
- 240″ (20 ft.) - $136.20 ea.
- Custom Cut
Starting at
$9.80
$9.80
$9.80 ea.
- OD 1.125" |
- Wall 0.058" |
- ID 1.009"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $10.18 ea.
- 24″ (2 ft.) - $19.51 ea.
-
36″ (3 ft.)
- $27.45 ea.
- 48″ (4 ft.) - $32.52 ea.
- 72″ (6 ft.) - $45.12 ea.
- 96″ (8 ft.) - $56.91 ea.
- 240″ (20 ft.) - $134.16 ea.
- Custom Cut
Starting at
$10.18
$10.18
$10.18 ea.
- Hex 0.5"
Alloy Steel Hex Bar 4130-Normalized
Select...
- 12″ (1 ft.) - $10.26 ea.
- 24″ (2 ft.) - $19.75 ea.
-
36″ (3 ft.)
- $27.98 ea.
- 48″ (4 ft.) - $33.61 ea.
- 72″ (6 ft.) - $47.09 ea.
- 96″ (8 ft.) - $59.84 ea.
- 144″ (12 ft.) - $85.34 ea.
- Custom Cut
Starting at
$10.26
$10.26
$10.26 ea.
- OD 0.875" |
- Wall 0.065" |
- ID 0.745"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $10.87 ea.
- 24″ (2 ft.) - $20.96 ea.
-
36″ (3 ft.)
- $29.68 ea.
- 48″ (4 ft.) - $35.66 ea.
- 72″ (6 ft.) - $49.97 ea.
- 96″ (8 ft.) - $63.50 ea.
- 240″ (20 ft.) - $150.93 ea.
- Custom Cut
Starting at
$10.87
$10.87
$10.87 ea.
- OD 0.75" |
- Wall 0.058" |
- ID 0.634"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $10.98 ea.
- 24″ (2 ft.) - $21.17 ea.
-
36″ (3 ft.)
- $29.98 ea.
- 48″ (4 ft.) - $36.02 ea.
- 72″ (6 ft.) - $50.50 ea.
- 96″ (8 ft.) - $64.17 ea.
- 240″ (20 ft.) - $152.51 ea.
- Custom Cut
Starting at
$10.98
$10.98
$10.98 ea.
- OD 0.75" |
- Wall 0.049" |
- ID 0.652"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $11.28 ea.
- 24″ (2 ft.) - $21.76 ea.
-
36″ (3 ft.)
- $30.81 ea.
- 48″ (4 ft.) - $37.02 ea.
- 72″ (6 ft.) - $51.88 ea.
- 96″ (8 ft.) - $65.93 ea.
- 240″ (20 ft.) - $156.72 ea.
- Custom Cut
Starting at
$11.28
$11.28
$11.28 ea.
- Dia. 0.5"
Alloy Steel Round Bar 4130-Normalized Cold Finish
Select...
- 12″ (1 ft.) - $11.42 ea.
- 24″ (2 ft.) - $21.93 ea.
-
36″ (3 ft.)
- $31.53 ea.
- 48″ (4 ft.) - $40.21 ea.
- 72″ (6 ft.) - $54.83 ea.
- 96″ (8 ft.) - $80.42 ea.
- 144″ (12 ft.) - $109.66 ea.
- Custom Cut
Starting at
$11.42
$11.42
$11.42 ea.
- OD 0.313" |
- Wall 0.058" |
- ID 0.197"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $11.98 ea.
- 24″ (2 ft.) - $22.99 ea.
-
36″ (3 ft.)
- $32.33 ea.
- 48″ (4 ft.) - $38.32 ea.
- 72″ (6 ft.) - $53.17 ea.
- 96″ (8 ft.) - $67.06 ea.
- 240″ (20 ft.) - $158.09 ea.
- Custom Cut
Starting at
$11.98
$11.98
$11.98 ea.
- OD 0.5" |
- Wall 0.035" |
- ID 0.43"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $12.20 ea.
- 24″ (2 ft.) - $23.45 ea.
-
36″ (3 ft.)
- $32.96 ea.
- 48″ (4 ft.) - $39.06 ea.
- 72″ (6 ft.) - $54.21 ea.
- 96″ (8 ft.) - $68.37 ea.
- 240″ (20 ft.) - $161.16 ea.
- Custom Cut
Starting at
$12.20
$12.20
$12.20 ea.
- Dia. 0.4375"
Alloy Steel Round Bar 4130-Normalized Cold Finish
Select...
- 12″ (1 ft.) - $12.38 ea.
- 24″ (2 ft.) - $24.31 ea.
-
36″ (3 ft.)
- $35.87 ea.
- 48″ (4 ft.) - $47.02 ea.
- 72″ (6 ft.) - $68.32 ea.
- 96″ (8 ft.) - $88.28 ea.
- 144″ (12 ft.) - $130.39 ea.
- Custom Cut
Starting at
$12.38
$12.38
$12.38 ea.
- OD 0.375" |
- Wall 0.049" |
- ID 0.277"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $12.40 ea.
- 24″ (2 ft.) - $23.91 ea.
-
36″ (3 ft.)
- $33.85 ea.
- 48″ (4 ft.) - $40.65 ea.
- 72″ (6 ft.) - $56.98 ea.
- 96″ (8 ft.) - $72.41 ea.
- 240″ (20 ft.) - $172.10 ea.
- Custom Cut
Starting at
$12.40
$12.40
$12.40 ea.
- Thick 0.025"
Alloy Steel Sheet 4130-Annealed
Select...
- 12″ X 12″ (1 X 1 ft.) - $12.41 ea.
- 12″ X 24″ (1 X 2 ft.) - $24.06 ea.
- 12″ X 36″ (1 X 3 ft.) - $35.02 ea.
- 12″ X 48″ (1 X 4 ft.) - $45.36 ea.
- 18″ X 18″ (18 X 18 in.) - $27.36 ea.
- 18″ X 24″ (18 X 24 in.) - $35.02 ea.
- 18″ X 36″ (18 X 36 in.) - $50.11 ea.
- 24″ X 24″ (2 X 2 ft.) - $44.15 ea.
- 24″ X 36″ (2 X 3 ft.) - $62.72 ea.
- 36″ X 36″ (3 X 3 ft.) - $86.09 ea.
- 36″ X 72″ (3 X 6 ft.) - $164.24 ea.
- Custom Cut
Starting at
$12.41
$12.41
$12.41 ea.
- OD 0.5" |
- Wall 0.058" |
- ID 0.384"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $12.42 ea.
- 24″ (2 ft.) - $23.80 ea.
-
36″ (3 ft.)
- $33.45 ea.
- 48″ (4 ft.) - $39.63 ea.
- 72″ (6 ft.) - $55.02 ea.
- 96″ (8 ft.) - $69.36 ea.
- 240″ (20 ft.) - $156.06 ea.
- Custom Cut
Starting at
$12.42
$12.42
$12.42 ea.
- Dia. 0.375"
Alloy Steel Round Bar 4130-Normalized Cold Finish
Select...
- 12″ (1 ft.) - $12.55 ea.
- 24″ (2 ft.) - $24.09 ea.
-
36″ (3 ft.)
- $33.94 ea.
- 48″ (4 ft.) - $40.32 ea.
- 72″ (6 ft.) - $56.05 ea.
- 96″ (8 ft.) - $70.79 ea.
- 144″ (12 ft.) - $100.29 ea.
- Custom Cut
Starting at
$12.55
$12.55
$12.55 ea.
- OD 0.375" |
- Wall 0.035" |
- ID 0.305"
Alloy Steel Round Tube 4130-Cond. N Seamless
Select...
- 12″ (1 ft.) - $12.80 ea.
- 24″ (2 ft.) - $24.59 ea.
-
36″ (3 ft.)
- $34.56 ea.
- 48″ (4 ft.) - $40.99 ea.
- 72″ (6 ft.) - $56.84 ea.
- 96″ (8 ft.) - $71.69 ea.
- 240″ (20 ft.) - $153.62 ea.
- Custom Cut
Starting at
$12.80