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Fasteners, Metals and Plastics - Alloy Steel - Alloy 4140

Alloy 4140 Flats - Annealed
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Alloy 4140 Flats - Heat Treated
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Prehardened to Rockwell C 26-30

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Alloy 4140 Rounds - Annealed
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Alloy 4140 Rounds - Heat Treated
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Prehardened to Rockwell C 26-30

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Alloy 4140 Squares - Annealed
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Alloy 4140 Squares - Heat Treated
Click Here for more information or to order

Typical Analysis:

Carbon - .38/.43
Manganese - .75/1.00
Phosphorus - .035 Max
Sulfur - .040 Max
Silicon - .15/.35
Chromium - .80/1.10
Molybdenum - .15/.25

Prehardened to Rockwell C 26-30

Squares and Flats - Furnished decarb free plus .015/.035
Round Bar - Furnished in hot rolled condition

Servicing Industry Since 1968

About Us

National Supply Source
111 Leo Ave.
Syracuse, NY 13206

Phone: (315) 463-6241
Fax: (315) 463-0316

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