21 MoMnCr 12XS - Special Alloy

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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 grade 21 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 grade 21 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)
695 (≥)	826 (≥)	31	41	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	114

Physical properties of grade 21 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
532 (≥)	328 (≥)	41	12	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	233
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
765	657	248

21 MoMnCr 12XS Range 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