This is a high-strength, low-alloy (HSLA) steel with substantial nickel and chromium content, designed to achieve superior strength and corrosion resistance through controlled alloying. The composition—particularly the 8.2% chromium, 9.85% nickel, and 1.78% molybdenum with minimal carbon—positions this as a precipitation-hardening or maraging-type steel intended for applications requiring both exceptional hardness and toughness. It is commonly used in aerospace structural components, landing gear, high-performance fasteners, and defense applications where weight savings and resistance to fatigue and stress corrosion cracking are critical; engineers select this alloy over conventional steels when operating temperatures are elevated or corrosive marine/chemical environments demand superior durability alongside high load-bearing capacity.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 15.00 | - | — | ||
Ultimate Tensile Strength(σUTS) | 206.7 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 200.7 | ksi | — |