Stainless Steel Alloy AISI 418, also known as Greek Ascoloy, is part of the martensitic family of stainless steels specifically formulated for forming into wrought products. Properties are appropriate for the heat treated (HT) condition, it has a fairly high base cost among wrought martensitic stainless steels, demonstrates fairly high tensile strength and a moderately high embodied energy. Alloy 418 also shows good corrosion resistance, high hardness, toughness and strength.
Stainless Steel product forms offered at all Titanium Industries’ locations:
Stainless Steel Alloy 418 Applications:
- Ducts
- Stiffeners
- Exhaust struts
- Engine braces
- Turbine exhaust components
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.15 – 0.20% | Cr 12.0 – 14.0% | W 2.50 – 3.50% | Ni 1.80 – 2.20% | P 0.04% Max | |||||
| S 0.03% Max | Si 0.50% Max | Mn 0.50% Max | Fe Balance | ||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density
(lb/ft3) |
Electrical conductivity
(% IACS) |
Thermal conductivity
(BTU/h-ft-°F) |
Specific heat capacity
(BTU/lb-°F) |
Thermal expansion
(µm/m-K) |
||
| 500 | 2.8% | 15 | 470 | 10 | ||
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | – | 105 | |||||||
| Tensile Strength Range (Rm) (ksi) | – | 130 | |||||||
| Elongation (AL=5 x Ø) | – | 15.0% | |||||||
| Hardness, Rockwell (C) | – | 25 | |||||||
| Modulus of Elasticity (ksi) (MPa): 30457 | |||||||||
| Machineability General Index: – | |||||||||
T.I. Approvals:
Plus a wide range of approvals from most leading OEM’s across Aerospace, Medical, Industrial, and Oil and Gas markets.