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W108 Extra chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of W108 Extra

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SAE W108 Extra

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This page is mainly introduced the W108 Extra chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of W108 Extra,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Tool and die steels

Steel Garde:W108 Extra
Type:Tool Die Steels
Country:USA
Standard:SAE

Standard Number:

ITEM	Standard Number	Descriptions
1	SAE J 437 (1970)	Selection and heat treatment of tool and die steels
2	SAE J 438 (1970)	Tool and die steels

Application:Tool and die steels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
W108 Commerial	UNS	USA
W108 Standard	SAE	USA
W108 Special	SAE	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.70	0.85
Si	0.10	0.40
Mn	0.10	0.40
Cr
V

Mechanical Properties

Tensile strength	659～481	σb/MPa
Yield Strength	138	σ 0.2 ≥/MPa
Elongation	27	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	793～820	-
HRC	30	-

Physical Properties

Thermal expansion	83-06	e-6/K
Thermal conductivity	67-57	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9798-9044	째C
Density	1074-2031	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)
W108 Extra Tool Die 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