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SUH4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH4

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CNS SUH4

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This page is mainly introduced the SUH4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
CNS standard heat resistant steel bar steel grade and chemical composition

Steel Garde:SUH4
Type:Stainless Steels
Country:China
Standard:CNS
Metallographic Structure:Martensite
Application:CNS standard heat resistant steel bar steel grade and chemical composition

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUH446	CNS	China
SUH409	CNS	China
SUH409L	CNS	China
SUH446	CNS	China

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.75	0.85
Si	1.75	2.25
Mn	0.20	0.60
P		0.030
S		0.030
Cr	19.00	20.50
Ni	1.15	1.65
Mo
N

Mechanical Properties

Tensile strength	539～433	σb/MPa
Yield Strength	498	σ 0.2 ≥/MPa
Elongation	97	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	029～577	-
HRC	30	-

Physical Properties

Thermal expansion	11-82	e-6/K
Thermal conductivity	69-67	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5235-8145	째C
Density	9963-5965	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)
SUH4 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