Product description
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.
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.
Grade | 420 stainless steel sheet |
Thinckness | 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 |
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 |
