Alloy 4140 (AISI 4140) is available in Bars (Rounds, Flat, Square, Hexagons). For all stock availability of contact Sales.
| Grade | US Aerospace/Military | US Commercial | Other |
| 4140 Ann | AMS 6349 AMS 6382 AMS S 5626 MIL-S- 5626 |
ASTM S331 | UNS G41400 |
| Chemical Composition Limits | |||||||||||
| Weight% | C | Si | Mn | Cr | Mo | ||||||
| 4140 Ann | 0.40 | 0.25 | 0.85 | 1.00 | 0.25 | ||||||
| 4140 Normalised | 0.40 | 0.25 | 0.85 | 1.00 | 0.25 | ||||||
Alloy 4140 (AISI 4140) is a low alloy steel containing Chromium and Molybdenum. Alloy 4140 is the most widely used alloy for oil patch applications. Usually supplied hardened and tempered to condition T in sections up to 100mm with a tensile strength of 850 - 100%MPa and aiming for this strength range in larger sections. Alloy 4140 (AISI 4140) offers a very good balance of strength, toughness and wear resistance. Other typical applications are axles, conveyor parts, crow bars, gears, logging parts, spindles, shafts, pump shafts, sprockets, studs, pinions, rams, ring gears.
| Alloy | Section mm | Yield Strength MPa | Tensile Strength MPa | Elongation % | Izod J | Hardness HB |
| Alloy 4140 | 50 | 770 | 930 | 17 | 90 | 275 |
| Alloy 4140 | 100 | 710 | 920 | 15 | 70 | 270 |
| Alloy 4140 | 200 | 570 | 850 | 14 | 60 | 250 |
Specifications
AMS 6349
AMS 6382
AMS S 5626
MIL S 5626
AS 1444-1996
UNS G41400
Harsh Steel export Harsh Steel AISI 4140 to below countries.
Harsh steel is a major stockist and Exporter of Harsh Steel AISI 4140 to many countries of the world such as Singapore, Brisbane, Sydney, Melbourne, Australia, Houston, TX, San Diego, San Francisco, Atlanta, USA, Brentford, United Kingdom, Phoenix, Ireland, New Zealand and Canada, Western Australia, Queensland, New South Wales, South Australia, Victoria, Australian Capital Territory, Tasmania, Northern Territory, Ontario, British Columbia, Yukon Territory, Alberta, Manitoba, Saskatchewan, New foundland, Prince Edward Island, New Brunswick, Nova Scotia, Eastern Cape, Gauteng, Kwazulu-Natal, Western Cape, England, Scotland, Wales, Northern Ireland, Lagos, Abuja Capital Territory, Vadodara, Mumbai, Chennai, New Delhi, Mahape, Gurgaon, Noida, Bangalore, Coimbatore, Cochin, Ash Sharqiyah, Ar Riyad, Makkah, Dhahran, Riyadh, Jiddah, Jeddah, Masqat, Kwazulu-Natal, Gauteng, Western Cape, Free State, Eastern Cape, Alberta, Saskatchewan, British Columbia, Newfoundland, New Brunswick, Manitoba, Ontario, Nova Scotia, Quebec, Calgary, Edmonton, Vancouver, Toronto, Birmingham, Brentford, Manchester, Bristol, Sheffield, Milton Keynes, London, Poplar, Edinburgh, Thames Ditton.