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T.69 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T.69

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B.S. T.69

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This page is mainly introduced the T.69 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T.69,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (titanium stabilized: 800 N/mm2) (weldable)

Steel Garde:T.69
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS T 69	Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (titanium stabilized: 800 N/mm2) (weldable)

Application:Specification for cold drawn 18/10 chromium-nickel corrosion-resisting steel tube (titanium stabilized: 800 N/mm2) (weldable)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
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
Ti	5×C	0.70

Mechanical Properties

Tensile strength	115～824	σb/MPa
Yield Strength	337	σ 0.2 ≥/MPa
Elongation	79	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	339～448	-
HRC	30	-

Physical Properties

Thermal expansion	46-36	e-6/K
Thermal conductivity	96-22	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3271-1116	째C
Density	8655-6517	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.69 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