ارسال رایگان دوام سفارشی ss 304
ارسال رایگان فروشنده سفارشی astm a564. 17-4PH / 1.4542 / S17400Precipitation Hardening Martensitic Stainless Steel. Stainless Steel 17-4 PH is a precipitation-hardening martensitic stainless steel that is widely used in a variety of applications due to its high strength, corrosion resistance, and excellent toughness.