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GH4738 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of GH4738

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GB GH4738

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This page is mainly introduced the GH4738 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of GH4738,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
GH4738

Steel Garde:GH4738
Type:Superalloys
Country:China
Standard:GB
Application:Nickel-base superalloy

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.03	0.10
Cr	18.0	21.0
Mo	3.5	5.0
Ni		Remainder
Co	12.0	15.0
Al	1.2	1.6
Ti	2.75	3.25
B	0.003	0.01
Fe		2.0
Zr	0.02	0.08

Mechanical Properties

Tensile strength	325～667	σb/MPa
Yield Strength	071	σ 0.2 ≥/MPa
Elongation	67	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	816～376	-
HRC	30	-

Physical Properties

Thermal expansion	46-55	e-6/K
Thermal conductivity	81-95	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6711-6763	째C
Density	4677-8975	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)
GH4738 Superalloys	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