4140 Alloy Steel
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Alloy Steel 4140 has high strength, high fatigue strength, toughness, torsional strength, and impact and abrasion resistance. Additionally, 4140 steel is highly ductile when annealed, though it requires more pressure as it is tougher than most carbon steels. 4140 is easily welded, but if this is done after hardening, it will also require a post weld heat treatment. This material is typically used in aerospace, oil, gas, automotive, agricultural, and defense industries, specifically gears, shafts, spindles, fixtures, and collars.
We offer 4140 in round tube, metric round tube, hex bar, metric hex bar, cold finish hex bar, rectangle bar, round bar, metric round bar, sheet plate, annealed sheet plate, and precision blanks.
Relevant Knowledge Hub Resources: 5 Reasons to Cut-to-Size | The Weldability of Steel
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%7B%22item_id%22%3A%2224561%22%2C%22item_name%22%3A%2225mm+Alloy+Steel+Round+Bar+4140-+TGP+Metric+72%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Annealed%22%2C%22item_category5%22%3A%22TGP%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
Dimensions
- Thickness: 0.75"
- Ships In: 6-8 Buisness Days
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%7B%22item_id%22%3A%2224559%22%2C%22item_name%22%3A%2220mm+Alloy+Steel+Round+Bar+4140-+TGP+Metric+72%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Annealed%22%2C%22item_category5%22%3A%22TGP%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
%7B%22item_id%22%3A%2224526%22%2C%22item_name%22%3A%2230mm+Alloy+Steel+Hex+Bar+4140+Metric+60%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Hex%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22%22%2C%22item_category5%22%3A%22Cold+Finish%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
%7B%22item_id%22%3A%22mp-00002586%22%2C%22item_name%22%3A%221.5%5C%22+X+12%5C%22+Alloy+Steel+Rectangle+Bar+4140+Heat+Treated%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Rectangle%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Heat+Treated%22%2C%22item_category5%22%3A%22Decarb+Free%22%2C%22item_category6%22%3A%22false%2Ffalse%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22true%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
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Dimensions
- Thickness: 0.875"
- Ships In: 6-8 Buisness Days
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
%7B%22item_id%22%3A%22mp-00002448%22%2C%22item_name%22%3A%225.500%5C%22+Alloy+Steel+Round+Bar+4140+Hot+Rolled+Heat+Treated%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Heat+Treated%22%2C%22item_category5%22%3A%22Hot+Rolled%22%2C%22item_category6%22%3A%22false%2Ffalse%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22true%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
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Dimensions
- Thickness: 1.75"
- Ships In: 6-8 Buisness Days
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
%7B%22item_id%22%3A%2224563%22%2C%22item_name%22%3A%2230mm+Alloy+Steel+Round+Bar+4140-+TGP+Metric+72%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Annealed%22%2C%22item_category5%22%3A%22TGP%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
Dimensions
- Thickness: 1.5"
- Ships In: 6-8 Buisness Days
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
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Dimensions
- Thickness: 1.25"
- Ships In: 6-8 Buisness Days
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
%7B%22item_id%22%3A%2224527%22%2C%22item_name%22%3A%2250mm+Alloy+Steel+Hex+Bar+4140+Metric+60%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Hex%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22%22%2C%22item_category5%22%3A%22Cold+Finish%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
Dimensions
- Thickness: 2.25"
- Ships In: 6-8 Buisness Days
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
%7B%22item_id%22%3A%22mp-00002461%22%2C%22item_name%22%3A%226.500%5C%22+Alloy+Steel+Round+Bar+4140+Hot+Rolled+Heat+Treated%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Heat+Treated%22%2C%22item_category5%22%3A%22Hot+Rolled%22%2C%22item_category6%22%3A%22false%2Ffalse%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22true%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
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%7B%22item_id%22%3A%22mp-00002428%22%2C%22item_name%22%3A%227.000%5C%22+Alloy+Steel+Round+Bar+4140+Hot+Rolled+Heat+Treated%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Heat+Treated%22%2C%22item_category5%22%3A%22Hot+Rolled%22%2C%22item_category6%22%3A%22false%2Ffalse%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22true%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
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%7B%22item_id%22%3A%22mp-00002446%22%2C%22item_name%22%3A%228.000%5C%22+Alloy+Steel+Round+Bar+4140+Hot+Rolled+Heat+Treated%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Bar-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22Heat+Treated%22%2C%22item_category5%22%3A%22Hot+Rolled%22%2C%22item_category6%22%3A%22false%2Ffalse%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22true%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
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%7B%22item_id%22%3A%2227592%22%2C%22item_name%22%3A%2240mm+OD+x+3mm+Wall+x+34mm+ID+Alloy+Steel+Round+Tube+4140+Metric+72%5C%22+Length+%5B%2B%2F-+2%5C%22%5D%22%2C%22item_brand%22%3A%22%22%2C%22item_category%22%3A%22Alloy+Steel%22%2C%22item_category2%22%3A%22Tube-Round%22%2C%22item_category3%22%3A%224140%22%2C%22item_category4%22%3A%22%22%2C%22item_category5%22%3A%22%22%2C%22item_category6%22%3A%22%2F%22%2C%22item_category7%22%3A%22%22%2C%22item_category8%22%3A%22false%22%2C%22item_category9%22%3A%22false%22%2C%22item_list_id%22%3A%22%22%2C%22item_list_name%22%3A%22%22%2C%22item_variant%22%3A%22%22%2C%22price%22%3A%22%22%2C%22quantity%22%3A%22%22%7D
Dimensions
- Outer Diameter: 40mm
- Wall: 3mm
- Inner Diameter: 34mm
Pack of 2
Pricing and availability for this item changes frequently. Contact us now for a fast quote.
Sold and shipped by MSP Metals
- Dia. 4.75"
4.750" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $349.90 ea.
- 24″ (2 ft.) - $699.79 ea.
- 72″ (6 ft.) - $2,099.38 ea.
- 144″ (12 ft.) - $4,198.76 ea.
Starting at
$349.90
$349.90
$349.90 ea.
- Dia. 18mm
Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"]
Pack of 1
$328.54
$328.54 ea.
- Dia. 35mm
Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"]
Pack of 1
$338.22
$338.22 ea.
Sold and shipped by MSP Metals
- Dia. 5"
5.000" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $387.70 ea.
- 24″ (2 ft.) - $775.39 ea.
- 72″ (6 ft.) - $2,326.18 ea.
- 144″ (12 ft.) - $4,652.37 ea.
Starting at
$387.70
$387.70
$387.70 ea.
- Dia. 25mm
Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"]
Pack of 1
$354.55
$354.55 ea.
- Dia. 20mm
Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"]
Pack of 1
$366.28
$366.28 ea.
Sold and shipped by MSP Metals
- Thick 1.5" |
- Width 12"
1.5" X 12" Alloy Steel Rectangle Bar 4140 Heat Treated
Select...
- 12″ (1 ft.) - $414.05 ea.
- 24″ (2 ft.) - $828.10 ea.
- 36″ (3 ft.) - $1,242.15 ea.
- 48″ (4 ft.) - $1,656.20 ea.
- 60″ (5 ft.) - $2,070.25 ea.
- 72″ (6 ft.) - $2,484.30 ea.
Starting at
$414.05
$414.05
$414.05 ea.
Sold and shipped by MSP Metals
- Dia. 5.5"
5.500" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $469.11 ea.
- 24″ (2 ft.) - $938.23 ea.
- 72″ (6 ft.) - $2,814.68 ea.
- 144″ (12 ft.) - $5,629.37 ea.
Starting at
$469.11
$469.11
$469.11 ea.
- Dia. 30mm
Alloy Steel Round Bar 4140- TGP Metric 72" Length [+/- 2"]
Pack of 1
$484.36
$484.36 ea.
Sold and shipped by MSP Metals
- Dia. 6"
6.000" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $558.28 ea.
- 24″ (2 ft.) - $1,116.57 ea.
- 72″ (6 ft.) - $3,349.71 ea.
- 144″ (12 ft.) - $6,699.41 ea.
Starting at
$558.28
$558.28
$558.28 ea.
Sold and shipped by MSP Metals
- Dia. 6.5"
6.500" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $655.21 ea.
- 24″ (2 ft.) - $1,310.42 ea.
- 72″ (6 ft.) - $3,931.25 ea.
- 144″ (12 ft.) - $7,862.50 ea.
Starting at
$655.21
$655.21
$655.21 ea.
Sold and shipped by MSP Metals
- Dia. 7"
7.000" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $759.89 ea.
- 24″ (2 ft.) - $1,519.77 ea.
- 72″ (6 ft.) - $4,559.32 ea.
- 144″ (12 ft.) - $9,118.64 ea.
Starting at
$759.89
$759.89
$759.89 ea.
Sold and shipped by MSP Metals
- Dia. 8"
8.000" Alloy Steel Round Bar 4140 Hot Rolled Heat Treated
Select...
- 12″ (1 ft.) - $992.51 ea.
- 24″ (2 ft.) - $1,985.01 ea.
- 72″ (6 ft.) - $5,955.03 ea.
- 144″ (12 ft.) - $11,910.06 ea.
Starting at
$992.51
$992.51
$992.51 ea.
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