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LW18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of LW18

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B.S. LW18

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This page is mainly introduced the LW18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of LW18,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes

Steel Garde:LW18
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS 6323-8	Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes

Application:Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
LWCF18	B.S.	UK

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si	0.20	1.00
Mn	0.50	2.00
P		0.045
S		0.030
Cr	17.00	19.00
Ni	9.00	12.00
Mo
Ti		0.70

Mechanical Properties

Tensile strength	125～040	σb/MPa
Yield Strength	125	σ 0.2 ≥/MPa
Elongation	04	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	033～403	-
HRC	30	-

Physical Properties

Thermal expansion	23-05	e-6/K
Thermal conductivity	51-75	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8698-8361	째C
Density	7603-8339	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)
LW18 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