AISI 300M (4340 MOD) alloy steel is a low alloy and vacuum melted alloy steel. A modified version of AISI 4340 steel, 300M has high content of molybdenum and silicon in comparison to AISI 4340 steel. This alloy steel demonstrates high strength, good toughness, fatigue strength and ductility; which allows for the the material to be used in aircraft landing gear, airframe parts, flap track, components for missiles, and some motorsport applications.
Alloy Steel Round Bar Offered at 91pro视频 can be found here.
AISI 300M (4340 MOD) Specifications:
Alloy Steel AISI 300M (4340 MOD) Applications:
- Aircraft landing gear
- Airframe parts
- Flap track
- Components for missiles
- Motorsports
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.38 鈥� 0.43% Max | Mn 0.65 鈥� 0.90% | Si 1.45 鈥� 1.80% | P 0.010% Max | S 0.008% | |||||
| Cr 0.70 鈥� 0.95% | Ni 1.65 鈥� 2.00% | Mo 0.30 鈥� 0.50% | V 0.05 鈥� 0.10% | Cu 0.35%听 Max | |||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density (lbs/cubic in) | Electrical conductivity (% IACS) | Thermal conductivity (BTU-in/hr-ft虏-掳F) | Specific heat capacity | Thermal expansion (1/掳F) | Melting Point (掳F) | |
| 0.284 | 鈥� | 鈥� | 鈥� | 鈥� | 2590 | |
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | 270 | 鈥� | |||||||
| Tensile Strength Range (ksi) | 220 | 鈥� | |||||||
| Elongation | 8% | 鈥� | |||||||
| Hardness (HBW) | 鈥� | 鈥� | |||||||
| Modulus of Elasticity (ksi) (E): 鈥� | |||||||||
| Machineability General Index: 鈥� | |||||||||
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T.I. Approvals:
Plus a wide range of approvals from most leading OEM鈥檚 across Aerospace, Medical, Industrial, and Oil and Gas markets.