AISI 4130 is a chromium-molybdenum alloy steel (0.28–0.33% C, 0.8–1.1% Cr, 0.15–0.25% Mo) widely used in aerospace structures, pressure vessels, and fasteners where moderate strength combined with good fracture toughness and weldability are required. It exhibits tensile strengths of 1,100–1,500 MPa depending on heat treatment, maintains reasonable toughness to moderate temperatures, and offers good fatigue resistance and machinability.
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11 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
S–N Curve (Wöhler)(S–N) | — | ksi | 11 entriesClick to expand | ||
3 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
CTE vs Temperature(α(T)) | Curve (13 pts) | µin/in·°F | Quench and temper to 125 ksi level | ||
Specific Heat vs Temperature(Cp(T)) | Curve (9 pts) | BTU/(lb·°F) | Quench and temper to 125 ksi level | ||
Thermal Conductivity vs Temperature(k(T)) | Curve (10 pts) | BTU/(hr·ft·°F) | Quench and temper to 125 ksi level |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data