Grades: Y1Cr18Ni9
standard: GB / T 1220-1992
● Features and Scope:
improve machinability, resistance World steel pipe network editing , burn resistance. Most suitable for automatic lathes. Bolts, nuts.
● chemical composition:
Carbon C: ≤ 0.15
silicon of Si: ≤ 1.00
Mn Mn: ≤ 2.00
SS: ≤ 0.15
phosphorus P: ≤ 0 World Steel Pipe News .20
chromium Cr: 17.00 ~ 19.00
Ni - Ni: 8.00 ~ 10.00
Mo Mo: can be added ≤ 0.60
● mechanical properties:
Tensile strength σb (MPa): ≥ 520
conditions yield the strength σ0.2 (MPa): ≥ 205
the elongation δ5 (%): ≥ 40
section shrinkage ψ (%): ≥ 50
hardness: ≤ 187HB; ≤ 90HRB; ≤ 200 HV < BR> ● heat treatment and microstructure:
heat treatment specifications: solution 1010 ~ 1150 ℃ rapid cooling. The Metallographic of
organizations: organizational characteristics of austenitic.
● Delivery Status: in general to heat treatment delivery, the treatment types specified in the contract; not indicated, according to the Steel Co., Ltd..