ISO3755, 200-400 200-400W Carbon Steel
Casting grades: 200-400; 200-400W
Metal Type: Carbon Steels
Casting Process: Sand Casting or Lost Wax Precision Investment Casting
Standard: ISO 3755
Similar Grade: GBT11352 ZG200-400; ASTM A27 U-415-205/415-205; BS3100 AM1; DIN1681 GS38 JIS5101 SC410; ГОСТ 977 15Л
Heat treatment: Annealing, Quenching and Tempering
| Steel Grade | C % | Mn % | Si % | P % | S % | Ni % | Cr % | Cu % | Mo % | V % |
| 200-400 | – | – | – | 0.035 | 0.035 | – | – | – | – | |
| 200-400W | 0.25 | 1.00 | 0.60 | 0.035 | 0.035 | 0.40 | 0.35 | 0.40 | 0.15 | 0.05 |
| Steel Grade | Tensile Strength Rm Mpa | Upper Yield Re, Mpa | Elongation % | Reduction of area Z % | Impact Strength KV J |
| 200-400 | 400-550 | 200 | 25 | 40 | 30 |
| 200-400W | 400-550 | 200 | 25 | 40 | 45 |
1. Mechanical properties are obtained from 28mm thick standard test blocks.
2. The testing ambient temperature was take as 23 ±- 5°C degree
What’s the means “W” in ISO3755?
“W” means WELDABLE GRADE. For example, 200-400 is non-weldable grade casting materiel, it’s choice of chemical composition shall be left to the discretion of the manufacturer. But 200-400W is weldable grade, ISO 3755 standard indicate the detailed chemistry for welding purpose.
