Alloy Steel 4140: forms, specifications and uses
Alloy Steel 4140 (UNS G41400) contains chromium, molybdenum, and manganese and is an excellent material choice for many various applications due to its toughness, high fatigue strength, and abrasion and impact resistance.
Titanium Industries offers Alloy Steel 4140 Round Bar from its locations.
Alloy Steel 4140 is supplied to specifications including AMS 2301, AMS-S-5626, AMS 6349 and AMS 6382.
Typical uses of Alloy Steel 4140 include commercial and military aircraft, automotive, oil & gas, agricultural and forged gears and shafts.
For Alloy Steel 4140, request a quote online or contact your nearest Titanium Industries location. Alloy data on this page is for reference only, not for design.
Alloy Steel 4140 | UNS# G41400 contains chromium, molybdenum, and manganese and is an excellent material choice for many various applications due to its toughness, high fatigue strength, and abrasion and impact resistance. Few grades match the versatility of 4140. AISI 4140 demonstrates good atmospheric corrosion resistance and shows good combinations of toughness, strength, fatigue and wear resistances. Because of these desirable characteristics, AISI 4140 is often used as forgings in the aerospace, oil & gas , agricultural, and defense industries.
Alloy Steel 4140 Specifications:
Alloy Steel 4140 product forms offered at all Titanium Industries' locations:
Alloy Steel 4140 Applications:
- Commercial and Military Aircraft
- Automotive
- Oil & Gas
- Agricultural
- Forged Gears and Shafts
Discounted Alloy Steel
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Fe 97.0% | Cr 1.0% | Mn 0.90% | C 0.40% | Si 0.25% | |||||
| Mo 0.20% | S 0.05% | P 0.04% | |||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft²-°F) | Specific heat capacity | Thermal expansion (1/°F) | Melting Point (°F) | |
| 0.284 | 7.84 | 396 | 0.113 | 0.00000678 | 2580 | |
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | 60.2 | 95 | |||||||
| Tensile Strength Range (Rm) (ksi) | 95 | 107.3 | |||||||
| Elongation (AL=5 x Ø) | 17.7% | 25.7% | |||||||
| Brinell Hardness (H) | 197 | 578 | |||||||
| Modulus of Elasticity (ksi) (E): 29700 | |||||||||
| Machineability General Index: 66% | |||||||||
Alloy Steel 4140: questions and answers
What is Alloy Steel 4140?
What is Alloy Steel 4140?
Alloy Steel 4140 (UNS G41400) contains chromium, molybdenum, and manganese and is an excellent material choice for many various applications due to its toughness, high fatigue strength, and abrasion and impact resistance.
Which Alloy Steel 4140 product forms does Titanium Industries stock?
Which Alloy Steel 4140 product forms does Titanium Industries stock?
Alloy Steel 4140 Round Bar.
Which specifications does Alloy Steel 4140 meet?
Which specifications does Alloy Steel 4140 meet?
AMS 2301, AMS-S-5626, AMS 6349 and AMS 6382.
What is Alloy Steel 4140 used for?
What is Alloy Steel 4140 used for?
Commercial and military aircraft, automotive, oil & gas, agricultural and forged gears and shafts.