632 S15700 - ASTM A564/A564M-2019

Grade	632
USA UNS	S15700
Corresponding Standard	ASTM A564/A564M-2019(a) Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
Classification	Precipitation-Hardening Stainless Steel
Properties	Corrosion Resistance

632 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	Al
Minimum Value	-	-	-	-	-	14	6.5	2	0.75
Maximum Value	0.09	1	1	0.04	0.03	16	7.75	3	1.5

632 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Steel	Solution heat treatment (A): 1040±15°C (water quenching)					HRB: ≤100 HB: ≤269
Steel; t≤100 (Longitudinal)	Quenching and/or aging (RH950): 955°C, hold for at least 10min but no more than 1h, rapid cooling to room temperature. Cool to -75°C within 24h, hold for at least 8h, heat to room temperature. Heat to 510°C, hold for 1h, air cooling	≥1380	≥1210	≥7	≥25	HB: ≥415
Steel; t≤150 (longitudinal)	Quenching and/or aging (TH1050): 760°C, hold for at least 90min, cool to 55±3°C within 1h, hold for at least 30min, heat to 565°C, hold for 90min, air cooling	≥1240	≥1100	≥8	≥25	HB: ≥375

Approximate Comparison Table Precipitation Hardening Stainless Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

ISC

CNS

JIS

ASTM

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

07Cr15Ni7Mo2Al
(0Cr15Ni7Mo2Al)

S51570

632

SUS 632

STS 632

632

S15700

X8CrNiMoAl 15-7-2

1.4532

Z8CNDA 17-07

X8CrNiMoAl 15-7-2

1.4532

632 Corresponding Standards(Same grade name, different standards)

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