300M, Maraging steels, Precipitation-Hardening Stainless Steels (e.g., 17-4 PH). Manufacturing and Heavy Machinery
The SAE International repository for automotive and aerospace material specifications.
The performance of steel is dictated by its chemical composition and microstructure. : : The complete guide to steel metallurgy covers
The complete guide to steel metallurgy covers the internal structures, physical traits, standard classifications, and industrial uses of this critical alloy. Understanding these engineering principles explains why steel remains the foundation of modern infrastructure and manufacturing. Fundamentals of Steel Metallurgy
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Predictable yield strength, excellent weldability, and structural ductility. Automotive and Transportation
| Grade | C% | Tensile (MPa) | Yield (MPa) | Hardness (HB) | Common Use | |-------|----|--------------|-------------|---------------|-------------| | A36 | 0.26 | 400–550 | 250 | 120–160 | Structural beams | | 1018 | 0.18 | 440 | 370 | 130 | Shafts, pins | | 4140 (Q&T) | 0.40 | 950 | 655 | 300 | Axles, gears | | 304 SS | 0.08 | 515 | 205 | 150 | Food equipment | | 17-4PH (H900) | 0.07 | 1310 | 1170 | 400 | Aerospace fittings | ASM International publications
A detailed comparison between .