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S.125 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S.125

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B.S. S.125

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This page is mainly introduced the S.125 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S.125,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in)

Steel Garde:S.125
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS S 125	Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in)

Application:Specification for aircraft material. 23/14 chromium-nickel heat-resisting steel (titanium stabilized) (35 tonf/sq in: limiting ruling section 6 in)

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.15
Si	0.20	1.00
Mn	0.50	2.00
P		0.035
S		0.025
Cr	22.00	25.00
Ni	13.00	16.00
Mo
Ti		4×C

Mechanical Properties

Tensile strength	171～212	σb/MPa
Yield Strength	816	σ 0.2 ≥/MPa
Elongation	12	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	748～499	-
HRC	30	-

Physical Properties

Thermal expansion	25-87	e-6/K
Thermal conductivity	32-37	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4263-4358	째C
Density	6326-3936	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)
S.125 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