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420 Stainless Steel Sheet/Plate
Introduction
SS420 is a martensitic stainless stee that provides corrosion resistance similar to SS410 plus increased strength and hardness.It is magentic in both annealed and hardened conditions.Maximum corrosion resistance only in the fully hardened and stress relieved condition.

Grade

420 stainless steel sheet

Thickness

0.3-6mm

Widthness

1000mm, 1219mm, 1524mm or as customized

Length

2438mm, 3048mm, 6096mm or as customized

Brand name

TISCO,BAO Steel,ZPSS,BAO XIN,LISCO..

Standard

JIS, AISI, ASTM, GB, DIN, EN ,etc.

Finish

2B, Hairline, No.4, BA, 8K mirror, etc.

Certification

SGS

Packaging

Standard exporting packing; seaworthy package.

MOQ

2 Tons


Realted Products:

Stainless steel wire rod,stainless steel pipe/tube,stainless steel flat bar,stainless steel angel bar...


Annealing:
Annealing is achieved by heating to above 816℃ and 899℃for 90 minutes per 25mm thickness followed by air quenching.Controlled atmospheres are recommended in order to avoid excessive oxidation of the surface.

Welding:
The martensitic class of stainless steeks has limited weldability due to its hardnability.Special consideration is  required to avoid cold cracking by preheating to 260℃.Post-weld heat treatment should be considered to achieve required properties.This particular alloy is generally considered to have the best weldability of this stainless class.









Specification
Chemical Composition and mechanical properties:

420

C

Si

Mn

P

S

Ni

Cr

0.3-0.4

≤1.0

≤1.00

≤0.04

≤0.03

≤0.75

12.00~14.00

tensile strength σb   (MPa)

yield strength   σ0.2(MPa)

elongation    δ5(%)

Hardness   HB

≥635

≥310

≥25

≤223


tolerance range of 420 cold rolled stainless steel sheet/plate

Thickness

Large  Tolerance

Normal Tolerance

Small Tolerance

No Tolerance

0.4MM

0.3-0.32

0.33-0.37

0.37-0.39

≥0.39

0.5MM

0.4-0.42

0.43-0.47

0.47-0.49

≥0.49

0.6MM

0.5-0.52

0.53-0.56

0.57-0.59

≥0.59

0.7MM

0.6-0.62

0.63-0.67

0.67-0.69

≥0.69

0.8MM

0.7-0.72

0.73-0.77

0.74-0.79

≥0.79

0.9MM

0.8-0.82

0.83-0.87

0.87-0.89

≥0.89

1.0MM

0.89-0.9

0.91-0.94

0.94-0.99

≥0.99

1.2MM

1.02-1.08

1.09-1.15

1.16-1.18

≥1.18

1.5MM

1.32-1.38

1.39-1.45

1.46-1.48

≥1.48

2.0MM

1.72-1.79

1.8-1.86

1.87-1.9

≥1.9

2.5MM

2.23-2.36

2.32-2.42

2.42-2.47

≥2.48

3.0MM

2.7-2.77

2.78-2.85

2.85-2.9

≥2.9


tolerance range of 420 hot rolled stainless steel sheet/plate

Thickness

Large  Tolerance

Normal Tolerance

Small Tolerance

No Tolerance

3.0MM

2.6-2.75

2.75-2.85

2.86-2.9

≥2.9

4.0MM

3.5-3.6

3.6-3.75

3.76-3.95

≥3.95

5.0MM

4.5-4.6

4.6-4.75

4.75-4.95

≥4.95

6.0MM

5.4-5.6

5.6-5.75

5.75-5.85

≥5.85

8.0MM

7.3-7.5

7.5-7.65

7.65-7.85

≥7.85

10.0MM

9.2-9.3

9.3-9.6

9.6-9.85

≥9.85

12.0MM

11.1-11.2

11.2-11.6

11.6-11.85

≥11.85

14.0MM

13.1-13.2

13.2-13.6

13.6-13.85

≥13.85

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