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1.4021 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4021

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B.S. 1.4021

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This page is mainly introduced the 1.4021 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.4021,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Steel Garde:1.4021
Type:Stainless Steels
Country:UK
Standard:B.S.

Standard Number:

ITEM	Standard Number	Descriptions
1	BS EN 10088-1	Stainless steels - Part 1: List of stainless steels
2	BS EN 10088-2	Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
3	BS 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	BS EN 10088-4	Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes
5	BS 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	BS EN 10151	Stainless steel strip for springs - Technical delivery conditions
7	BS EN 10250-4	Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Metallographic Structure:Martensite
Application:Open die steel forgings for general engineering purposes - Part 4: Stainless steels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X20Cr13	AWS	Germany
1.4021	AWS	Germany
X20Cr13	B.S.	UK
X20Cr13	AFNOR	France
1.4021	AFNOR	France
X20Cr13	ISO	International

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.16	0.25
Si		1.00
Mn		1.50
P		0.04
S		0.015
Cr	12.00	14.00
Ni
Mo

Mechanical Properties

Tensile strength	466～577	σb/MPa
Yield Strength	637	σ 0.2 ≥/MPa
Elongation	86	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	675～016	-
HRC	30	-

Physical Properties

Thermal expansion	16-23	e-6/K
Thermal conductivity	78-00	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5565-7621	째C
Density	0669-3933	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)
1.4021 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