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**21 MoMnCr 12XS**Application:Alloy structural steel
Category	Type	Steel grade	Standard	Country
Grades	Special Alloy	21 MoMnCr 12XS	STAS/SR	Romania

Chemical composition%of the ladle analysis of grade21 MoMnCr 12XS

C(％)	Si(％)	Mn(％)	P(％)	S(％)	Cr(％)	Ni(％)	Mo(％)	Ti(%)
0.18-0.24	0.17-0.37	0.80-1.20	0.025	0.020-0.035	1.00-1.40	0.3	0.20-0.30	0.02

21 MoMnCr 12XS

Mechanical properties of grade21 MoMnCr 12XS
Proof strength R_p0.2(MPa)	Tensile strength R_m(MPa)	Impact energy KV(J)	Elongation at fracture A(%)	Reduction in cross section on fracture Z(%)	As-Heat-Treated Condition	Brinell hardness(HBW)
126(≥)	413(≥)	34	32	24	Solution and Aging,Annealing,Ausaging,Q+T,etc	434

Physical properties of grade21 MoMnCr 12XS
Property	Density kg/dm3	Temperature T °C/F	Specific heat J/kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2
791(≥)	172(≥)	42	14	43	Solution and Aging,Annealing,Ausaging,Q+T,etc	232
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0)N/mm2	Creep rupture strength (10000h) (Rp1,0)N/mm2
429	829	946

21 MoMnCr 12XSRange of products
Product type	Products	Dimension	Processes	Deliver Status
Plates/Sheets	Plates/Sheets	0.08-200mm(T)WL	Forging,hot rolling and cold rolling	Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel Bar	Round Bar,Flat Bar,Square Bar	Φ8-1200mm*L	Forging,hot rolling and cold rolling,Cast	Black,Rough Turning,Shot Blasting,
Coil/Strip	Steel Coil/Steel Strip	0.03-16.0x1200mm	Cold-Rolled&Hot-Rolled	Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/Tubes	Seamless Pipes/Tubes,Welded Pipes/Tubes	OD:6-219mm x WT:0.5-20.0mm	Hot extrusion,Cold Drawn,Welded	Annealed,Solution and Aging,Q+T,ACID-WASHED

Cross Reference Table(Equivalent Grade)
Grade	Standard	Country	Application
1Cr21Ni5Ti	STAS/SR	Romania	Cold rolled stainless steel sheets and plates
5Cr21Mn9Ni4N	STAS/SR	Romania	Heat-resisting steel bars
2Cr21Ni12N	STAS/SR	Romania	Heat-resisting steel bars
GH2130	STAS/SR	Romania	Classification and designation for superalloys and high temperature intermetallic materials
GH2132	STAS/SR	Romania	Classification and designation for superalloys and high temperature intermetallic materials
GH2135	STAS/SR	Romania	Classification and designation for superalloys and high temperature intermetallic materials
GH2136	STAS/SR	Romania	Classification and designation for superalloys and high temperature intermetallic materials
XM-31	STAS/SR	Romania	Chemical compositions of SAE wrought stainless steels
S21400	STAS/SR	Romania	Chemical compositions of SAE wrought stainless steels
S21460	STAS/SR	Romania	Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
S21500	STAS/SR	Romania	Austenitic Chromium Manganese Nickel Molybdenum Stainless Steel
216	STAS/SR	Romania	Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-479 Type XM-17	STAS/SR	Romania	Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 240 Type XM-17	STAS/SR	Romania	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 479 XM-17	STAS/SR	Romania	Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A 492 Type XM-17	STAS/SR	Romania	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 959 Type XM-17	STAS/SR	Romania	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
S21600	STAS/SR	Romania	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
216L	STAS/SR	Romania	Chemical compositions of SAE wrought stainless steels
S21603	STAS/SR	Romania	Austenitic Chromium Manganese Nickel Molybdenum Stainless Steel