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X6CrNi25-21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X6CrNi25-21

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ISO X6CrNi25-21

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This page is mainly introduced the X6CrNi25-21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of X6CrNi25-21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 5: Stainless steels

Steel Garde:X6CrNi25-21
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 4955 (2005)	Heat-resistant steels
2	ISO 9327-5	Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 5: Stainless steels

Metallographic Structure:Austenite
Application:Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 5: Stainless steels

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.50
Mn		2.00
P		0.045
S		0.030
Cr	24.00	26.00
Ni	19.00	22.00

Mechanical Properties

Tensile strength	602～838	σb/MPa
Yield Strength	370	σ 0.2 ≥/MPa
Elongation	17	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	103～311	-
HRC	30	-

Physical Properties

Thermal expansion	88-96	e-6/K
Thermal conductivity	34-15	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4673-4545	째C
Density	5616-5383	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
X6CrNi25-21 Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk