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Chemical Propeties | ||||||||||||||||
Grade | Fe | O | AI | V | Pd | Mo | Ni | Ti | ||||||||
Gr1 | 0.2 | 0.18 | / | / | / | / | / | Balance | ||||||||
Gr2 | 0.3 | 0.25 | / | / | / | / | / | Balance | ||||||||
Gr5 | 0.4 | 0.2 | 5.5~6.75 | 3.5~4.5 | / | / | / | Balance | ||||||||
Gr7 | 0.3 | 0.25 | / | / | 0.12~0.25 | / | / | Balance | ||||||||
Gr9 | 0.25 | 0.15 | 2.5~3.5 | 2.0~3.0 | / | / | / | Balance | ||||||||
Gr12 | 0.3 | 0.25 | / | / | / | 0.2~0.4 | 0.6~0.9 | Balance | ||||||||
Mechanical Properties(>%) | ||||||||
Grade | Tensile Strength(min) | Yeild Strength(0.2% offset)) | ||||||
ksi | MPa | Min | ||||||
Ksi | Mpa | |||||||
1 | 35 | 240 | 25 | 170 | ||||
2 | 50 | 345 | 40 | 275 | ||||
7 | 50 | 345 | 40 | 275 | ||||
9 | 90 | 620 | 70 | 483 | ||||
12 | 70 | 483 | 50 | 345 | ||||

















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