CY-203W ESR
High-quality alloy tool structural steel
Production Process Flow: EF+LF+VD+ESR+Forging+Heat Treatment
Chemical Composition (%):
|
C |
SI |
Mn |
Cr |
Mo |
Ni |
W |
P |
S |
|
0.15/0.24 |
0.60/0.90 |
0.45/0.90 |
1.50/1.90 |
0.35/0.47 |
2.52/2.95 |
0.15/0.21 |
≤ 0.020 |
≤0.010 |
Main characteristics: Excellent mechanical properties, good toughness, good hardenability, certain corrosion resistance, slightly lower corrosion resistance than stainless steel in strong acid and alkali environments, ability to ensure the continuity of metal fiber structure in forging, good processing performance, and medium weldability.
Main Applications: Suitable for high-load wear-resistant mechanical manufacturing parts, shaft parts, and parts with harsh working environment conditions. It can withstand large impact forces. Forgings have more reliable mechanical properties than castings, offer a high cost-performance ratio, and have a long service life. It is suitable for high fatigue parts in automobiles and construction machinery, such as transmissions, differentials, gears, etc., as well as large transmission parts in petroleum, mining, and wind power industries. Its low-temperature toughness is significantly better than that of steel grades such as 20CrNiMo and 20CrMo.
Purity: Complies with the requirements of GB/T1299-2014, GB/T3077-2015, and GB/T10561-2015 standards
Microstructure: Meet the requirements of GB/T13298-2015 and GB/T13299-1991 standards.
Gas content: [H] ≤ 1.5ppm, [O] ≤ 20ppm,
Specifications and Dimensions: Round bar φ100 to φ400, module thickness 100mm to 500mm, width ≤1000mm, or produced according to customer's standard dimensions.
Heat treatment: hydrogen expansion annealing at 650℃-680℃, with Brinell hardness HB≤ 220.
After quenching at 850℃-880℃, oil quenching is performed, followed by tempering at 580℃-620℃, resulting in a hardness of HRC28-32
HRC curve graph CCT diagram
