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1.4568 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4568

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AFNOR 1.4568

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This page is mainly introduced the 1.4568 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4568,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel wire for mechanical springs - Part 3: Stainless spring steel wire

Steel Garde:1.4568
Type:Stainless Steels
Country:France
Standard:AFNOR

Standard Number:

ITEM	Standard Number	Descriptions
1	NF EN 10088-1	Stainless steels - Part 1: List of stainless steels
2	NF EN 10088-2	Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
3	NF EN 10088-3	Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
4	NF EN 10088-4	Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes
5	NF EN 10088-5	Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes
6	NF EN 10151	Stainless steel strip for springs - Technical delivery conditions
7	NF EN 10270-3	Steel wire for mechanical springs - Part 3: Stainless spring steel wire

Metallographic Structure:Precipitation-Hardening
Application:Steel wire for mechanical springs - Part 3: Stainless spring steel wire

Relevant products:

1.4568 Spring Steel Wire

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X7CrNiAl17-7	B.S.	UK
1.4568	B.S.	UK
X7CrNiAl17-7	AFNOR	France
X7CrNiAl17-7	ISO	International

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.09
Si		0.70
Mn		1.00
P		0.040
S		0.015
Cr	16.00	18.00
Mo
Ni	6.50	7.80
Al	0.70	1.50

Mechanical Properties

Tensile strength	015～241	σb/MPa
Yield Strength	530	σ 0.2 ≥/MPa
Elongation	60	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	677～785	-
HRC	30	-

Physical Properties

Thermal expansion	49-36	e-6/K
Thermal conductivity	65-98	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3512-3318	째C
Density	3122-5252	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)
1.4568 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