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18MnMoNbR chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 18MnMoNbR

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GBT 18MnMoNbR

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This page is mainly introduced the 18MnMoNbR chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 18MnMoNbR,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
18MnMoNbR

Steel Garde:18MnMoNbR
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	646～313	σb/MPa
Yield Strength	304	σ 0.2 ≥/MPa
Elongation	51	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	115～373	-
HRC	30	-

Physical Properties

Thermal expansion	57-14	e-6/K
Thermal conductivity	46-74	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7220-3613	째C
Density	8813-6870	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)
18MnMoNbR 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