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30CD4 alloy steel:
1. RELATED SPECIFICATIONS:
USA | AISI 4130 |
ASTM A29/A29M-91 4130 | |
SAE 4130 | |
Japan | SCM430/SCM2 |
Germany | DIN(W-Nr) 34CrMo4(1.7220) |
Great Britain | / |
France | NF 30CD4 |
2. TYPICAL CHEMICAL ANALYSIS:
| Elements | Carbon | Manganese | Silicon | Chromium | Molybdenum | Phosphorus | Sulfur | Cuprum |
| NF 30CD4 | 0.38-0.45 | 0.50-0.80 | 0.17-0.37 | 0.90-1.20 | 0.15-0.25 | 0.035 max | 0.035 max | 0.25 max |
3. HEAT TREATMENT CONDITION AND MECHANICAL PROPERTIES:
Heat Treatment | Mechanical Properties | Hardness | ||||||
Normalizing | Quenching | Tempering | TensileStrength (Mpa) | Yield Point (Mpa) | Elongation (%) | Reduction of area (%) | Impact Absorbing Energy (J) | Before Heat Treatment (HB) |
Celsius Degree | MIN | MAX | ||||||
/ | 880 | 540 | 930 | 785 | 12 | 50 | 63 | 229 |
4. SIZE RANGE:
Forged round bars: Dia. 12mm-600mm;
Forged flat bars: Width:20mm~800mm; Thickness: 20mm~300mm;Forged rings: OD: up to 2500mm;
Hot rolled sheet: Width: up to 2000mm; Thickness: up to 350mm
5. Plant image:
Technical process: