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U20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of U20

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AFNOR U20

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This page is mainly introduced the U20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of U20,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:U20
Type:Special Alloy
Country:France
Standard:AFNOR
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
U20	AFNOR	France
U20080	GBT	China
U20100	GBT	China
U20150	GBT	China
U20082	GBT	China
U20102	GBT	China
U20152	GBT	China
U20202	GBT	China
U20252	GBT	China
U20302	GBT	China
U20352	GBT	China
U20402	GBT	China
U20452	GBT	China
U20502	GBT	China
U20552	GBT	China
U20602	GBT	China
U20652	GBT	China
U20702	GBT	China
U20752	GBT	China
U20802	GBT	China
U20852	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	241～033	σb/MPa
Yield Strength	914	σ 0.2 ≥/MPa
Elongation	13	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	668～341	-
HRC	30	-

Physical Properties

Thermal expansion	74-28	e-6/K
Thermal conductivity	77-70	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8694-1850	째C
Density	4373-3867	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)
U20 Special Alloy	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