XM21 stainless steel

XM-21 stainless steel is based on 304 stainless steel and adds nitrogen and niobium elements. This improvement not only maintains the plasticity of the steel, improves the strength and work hardening tendency, but also enhances the resistance to pitting corrosion and intergranular corrosion. The following will introduce in detail the characteristics, composition content, mechanical properties, heat treatment and application fields of XM-21 stainless steel.

XM-21 stainless steel features:

Perfect balance of strength and corrosion resistance: The addition of nitrogen and niobium increases the strength of the steel and enhances the corrosion resistance, making it perform well in high strength requirements and corrosive environments.

Prevent plasticity from decreasing: The plasticity of steel is maintained after adding elements, ensuring its processing performance.

Improved pitting and intergranular corrosion resistance: The new formula makes the steel more reliable in corrosive environments.

chemical composition

Elements	Min.（≥）	Max.（≤）
C	-	0.08
Si	-	1.00
Mn	-	2.00
P	-	0.045
S	-	0.03
Cr	18.0	20.0
Ni	8.00	10.5
N	0.16	0.30

GNEE XM21 stainless steel brand

Category	Type	Grade	Microstructure	Designations
Grades	Stainless Steels	XM-21	Austenite	USA - UNS , SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels

Grade	Standard	Country	Application
A 240 Type XM-21	SAE	USA	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 276 XM-21	SAE	USA	Stainless Steel Bars and Shapes
A 959 Type XM-21	SAE	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
SA-276 XM-21	AMS	USA	Specification for Stainless Steel Bars and Shapes
XM-21	UNS	USA	Chemical compositions of SAE wrought stainless steels
A 240 S30452	SAE	USA	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 276 S30452	SAE	USA	Stainless Steel Bars and Shapes
S30452	AISI	USA	Austenitic Chromium Nickel Stainless Steel
SA-240 S30452	AMS	USA	Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 240 S30452	SAE	USA	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 276 S30452	SAE	USA	Stainless Steel Bars and Shapes
S30452	AISI	USA	Austenitic Chromium Nickel Stainless Steel
SA-240 S30452	AMS	USA	Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

GNEE XM21 Form of Supply

Type XM-21 - Form of Supply

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

Other Terms

Packaging Details: Standard export seaworthy packing or as required.
Delivery Time: 30-50 days, 7 days for stock goods.
Loading Port: Shanghai ,Tianjin, Qingdao.
Offer Ability:5 000MT/Per Month.
MOQ: 1 Pcs.

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