Alloy Steel AISI 8740: forms, specifications and uses
Alloy Steel AISI 8740 (UNS G87400) is similar to AISI 4140 and is generally used for aircraft fasteners and engine bolts, piston rods, axles, tool joints, and other applications where strength, toughness, and wear resistance are top priorities.
Titanium Industries offers Alloy Steel AISI 8740 Round Bar from its locations.
Alloy Steel AISI 8740 is supplied to specifications including AMS 2301, AMS 6322, AMS-S-6049 and ASTM A331.
Typical uses of Alloy Steel AISI 8740 include aerospace fasteners, automotive, petrochemical, waste processing, marine, defense and pharmaceutical.
For Alloy Steel AISI 8740, 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 AISI 8740 | UNS# G87400 is similar to AISI 4140 and is generally used for aircraft fasteners and engine bolts, piston rods, axles, tool joints, and other applications where strength, toughness, and wear resistance are top priorities. As a nickel-chromium-molybdenum low-alloy steel, AISI 8740 demonstrates high tensile strength, good yield strength, fatigue resistance, toughness, and wear resistance properties.
Alloy Steel AISI 8740 Specifications:
Alloy Steel AISI 8740 product forms offered at all Titanium Industries' locations:
Alloy Steel AISI 8740 Applications:
- Aerospace Fasteners
- Automotive
- Petrochemical
- Waste Processing
- Marine
- Defense
- Pharmaceutical
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.43% Max | Cr 0.40 - 0.60% | Fe 96.65 - 97.72% | Mn 0.72 - 1.0% | Mo 0.20 - 0.30% | |||||
| Ni 0.40 - 0.70% | P 0.035% Max | Si 0.15 - 0.30% | S 0.040% Max | ||||||
| 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 | - | 323 | 0.114 | - | - | |
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | - | - | |||||||
| Tensile Strength Range (Rm) (ksi) | - | - | |||||||
| Elongation (AL=5 x Ø) | 16% | - | |||||||
| Brinell Hardness (H) | 269 | 269 | |||||||
| Modulus of Elasticity (ksi) (E): 29700 | |||||||||
| Machineability General Index: 65% | |||||||||
Alloy Steel AISI 8740: questions and answers
What is Alloy Steel AISI 8740?
What is Alloy Steel AISI 8740?
Alloy Steel AISI 8740 (UNS G87400) is similar to AISI 4140 and is generally used for aircraft fasteners and engine bolts, piston rods, axles, tool joints, and other applications where strength, toughness, and wear resistance are top priorities.
Which Alloy Steel AISI 8740 product forms does Titanium Industries stock?
Which Alloy Steel AISI 8740 product forms does Titanium Industries stock?
Alloy Steel AISI 8740 Round Bar.
Which specifications does Alloy Steel AISI 8740 meet?
Which specifications does Alloy Steel AISI 8740 meet?
AMS 2301, AMS 6322, AMS-S-6049 and ASTM A331.
What is Alloy Steel AISI 8740 used for?
What is Alloy Steel AISI 8740 used for?
Aerospace fasteners, automotive, petrochemical, waste processing, marine, defense and pharmaceutical.