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SUH21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH21

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CNS SUH21

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This page is mainly introduced the SUH21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
CNS standard heat resistant steel plate of the steel grade and chemical composition

Steel Garde:SUH21
Type:Stainless Steels
Country:China
Standard:CNS
Metallographic Structure:Ferrite
Application:CNS standard heat resistant steel plate of the steel grade and chemical composition

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.10
Si		1.50
Mn		1.00
P		0.040
S		0.030
Cr	17.00	21.00
Ni		0.60
Mo
Al	2.00	4.00

Mechanical Properties

Tensile strength	171～594	σb/MPa
Yield Strength	171	σ 0.2 ≥/MPa
Elongation	58	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	918～924	-
HRC	30	-

Physical Properties

Thermal expansion	07-31	e-6/K
Thermal conductivity	79-16	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6997-7567	째C
Density	1909-1297	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)
SUH21 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