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T.74 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T.74

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B.S. T.74

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This page is mainly introduced the T.74 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T.74,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for low carbon 18/10 chromium-nickel corrosion-resisting steel tube (500 N/mm2)

Steel Garde:T.74
Type:Stainless Steels
Country:UK
Standard:B.S.
Standard Number:

ITEM Standard Number Descriptions

1 BS T 74 Specification for low carbon 18/10 chromium-nickel corrosion-resisting steel tube (500 N/mm2)
Application:Specification for low carbon 18/10 chromium-nickel corrosion-resisting steel tube (500 N/mm2)

ITEM	Standard Number	Descriptions
1	BS T 74	Specification for low carbon 18/10 chromium-nickel corrosion-resisting steel tube (500 N/mm2)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.030
Si	0.20	1.00
Mn	0.50	2.00
P		0.035
S		0.025
Cr	17.00	19.00
Ni	9.00	12.00
Mo
Nb/Ti

Mechanical Properties

Tensile strength	399～399	σb/MPa
Yield Strength	981	σ 0.2 ≥/MPa
Elongation	92	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	814～791	-
HRC	30	-

Physical Properties

Thermal expansion	05-67	e-6/K
Thermal conductivity	69-08	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5785-5184	째C
Density	7530-6723	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)
T.74 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