XM-12 S15500 - ASTM A693-2024

Grade	XM-12
USA UNS	S15500
Corresponding Standard	ASTM A693-2024 Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
Classification	Precipitation-Hardening Stainless Steel

XM-12 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Nb
Minimum Value	-	-	-	-	-	14	3.5	2.5	0.15
Maximum Value	0.07	1	1	0.04	0.03	15.5	5.5	4.5	0.45

XM-12 Mechanical Properties

	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	Impact Energy Absorption KV2 J
0.038~101.6	Solid Solution Treatment	/	/	/	/	(HRC) ≤38	/
t＜4.762	Precipitation Hardening, 482℃	≥1310	≥1170	≥5	/	HRC 40~48	/
4.762~15.88	Precipitation Hardening, 482℃	≥1310	≥1170	≥8	≥25	HRC 40~48	/
15.90~102	Precipitation Hardening, 482℃	≥1310	≥1170	≥10	≥30	HRC 40~48	/
t＜4.762	Precipitation Hardening, 496°C	≥1170	≥1070	≥5	/	HRC 38~46	/
4.762~15.88	Precipitation Hardening, 496°C	≥1170	≥1070	≥8	≥25	HRC 38~47	/
15.90~102	Precipitation Hardening, 496°C	≥1170	≥1070	≥10	≥30	HRC 38~47	/
t＜4.762	Precipitation Hardening, 552°C	≥1070	≥1000	≥5	/	HRC 35~43	/
4.762~15.88	Precipitation Hardening, 552°C	≥1070	≥1000	≥8	≥30	HRC 33~42	≥14
15.90~102	Precipitation Hardening, 552°C	≥1070	≥1000	≥12	≥35	HRC 33~42	≥20
t＜4.762	Precipitation Hardening, 579°C	≥1000	≥860	≥5	/	HRC 31~40	/
4.762~15.88	Precipitation Hardening, 579°C	≥1000	≥860	≥9	≥30	HRC 29~38	≥20
15.90~102	Precipitation Hardening, 579°C	≥1000	≥860	≥13	≥35	HRC 29~38	≥27
t＜4.762	Precipitation Hardening, 593°C	≥965	≥790	≥5	/	HRC 31~40	/
4.762~15.88	Precipitation Hardening, 593°C	≥965	≥790	≥10	≥30	HRC 29~38	≥20
15.90~102	Precipitation Hardening, 593°C	≥965	≥790	≥14	≥35	HRC 29~38	≥27
t＜4.762	Precipitation Hardening, 621℃	≥930	≥725	≥8	/	HRC 28~38	/
4.762~15.88	Precipitation Hardening, 621℃	≥930	≥725	≥10	≥35	HRC 26~36	≥34
15.90~102	Precipitation Hardening, 621℃	≥930	≥725	≥16	≥40	HRC 26~36	≥41
t＜4.762	Precipitation Hardening, 760°C + 621°C	≥790	≥515	≥9	/	HRC 26~36	/
4.762~15.88	Precipitation Hardening, 760°C + 621°C	≥790	≥515	≥11	≥40	HRC 24~34	≥75
15.90~102	Precipitation Hardening, 760°C + 621°C	≥790	≥515	≥18	≥45	HRC 24~34	≥75

Note：Reduction of Area：Applicable to tests in the long transverse direction. Transverse to the direction of rolling and parallel to the product surface.
Note：Impact test is not required unless specified on the purchase order.

1 Approximate Comparison Table Precipitation Hardening Stainless Steel

China	United States			Germany	European Standard
GB	ASTM	UNS	SAE	W-Nr.	EN
0Cr15Ni5Cu4Nb	S15500	XM12	15-5PH	1.4545	X5CrNiCuNb15-5

2 Approximate Comparison Table Precipitation Hardening Stainless Steel

China		United States
GB	ISC	ASTM	UNS
05Cr15Ni5Cu4Nb (0Cr15Ni5Cu4Nb) GB/T 20878-2024	S51550	XM-12 ASTM A959	S15500

XM-12 Corresponding Standards(Same grade name, different standards)

1	ASTM A959-2004
	XM-12 S15500
2	ASTM A564/A564M-2019(a)
	XM-12 S15500
3	ASTM A693-2013
	XM-12 S15500
4	ASTM A959-2019
	XM-12 S15500
5	ASTM A705/A705M-2023
	XM-12 S15500
6	ASTM A693-2024
	XM-12 S15500

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!