633 S35000 - ASTM A693-2013

Grade	633
USA UNS	S35000
Corresponding Standard	ASTM A693-2013 Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
Classification	Precipitation-Hardening Stainless Steel

633 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N
Minimum Value	0.07	-	0.5	-	-	16	4	2.5	0.07
Maximum Value	0.11	0.5	1.25	0.04	0.03	17	5	3.2	0.13

633 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
0.03＜t＜0.038	Solid Solution Treatment	≤1380	≤620	≥8	HRC ≤30
0.03＜t＜0.05	Solid Solution Treatment	≤1380	≤605	≥8	HRC ≤30
0.05＜t＜0.13	Solid Solution Treatment	≤1380	≤595	≥8	HRC ≤30
0.13＜t＜0.25	Solid Solution Treatment	≤1380	≤585	≥8	HRC ≤30
t＞0.254	Solid Solution Treatment	≤1380	≤585	≥12	HRC ≤30
0.022＜t＜0.038	Precipitation Hardening, 455°C	≥1275	≥1035	≥2	HRC ≥42
0.038＜t＜0.041	Precipitation Hardening, 455°C	≥1275	≥1035	≥4	HRC ≥42
0.041＜t＜0.254	Precipitation Hardening, 455°C	≥1275	≥1035	≥6	HRC ≥42
0.254＜t＜4.762	Precipitation Hardening, 455°C	≥1275	≥1035	≥8	HRC ≥42
0.022＜t＜0.038	Precipitation Hardening, 540℃	≥1140	≥1000	≥2	HRC ≥36
0.038＜t＜0.041	Precipitation Hardening, 540℃	≥1140	≥1000	≥4	HRC ≥36
0.041＜t＜0.254	Precipitation Hardening, 540℃	≥1140	≥1000	≥6	HRC ≥36
0.254＜t＜4.762	Precipitation Hardening, 540℃	≥1140	≥1000	≥8	HRC ≥36

Approximate Comparison Table Precipitation Hardening Stainless Steel

China		United States		International Organization for Standardization		European Standard
GB	ISC	ASTM	UNS	ISO	Numerical Grade	Numerical Grade
09Cr17Ni5Mo3N GB/T 20878-2024	S51750	633 ASTM A959	S35000	X9CrNiMoN17-5-3	4457-350-00-X	(1.4457)

633 Corresponding Standards(Same grade name, different standards)

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