JIS SUS420J1 EN 1.4021 AISI 420A Cold Rolled Precision Stainless Steel Strip Coil
Martensitic stainless steels typically contain 12 to 17% chromium and nickel in a range of 0 to 5%.
The low nickel content ( compared to austenitic stainless steels ) offers the secondary advantage of a lower material cost.
They fall into 4 subgroups.
1. Fe-Cr-C steels, there were the first grades put into use and still widely used in engineering
and in wear resistant applications.
2. Ni-bearing grades, in which Ni replaces some of the C. Compared to the previous group,
they offer a higher toughness particularly at low temperatures.
Their higher Chromium content leads to a higher corrosion resistance.
Molybdenulm additions in groups 1 and 2 improve further the corrosion resistance.
3. Precipitation hardening stainless steels, offer the best combination of strength and toughness.
4. Creep resisting steels, with about 11% chromium, differ from subgroup 1 by additions of Co. Nb,
V and B which increases of high temperature strength and creep resistance up to 650℃.
| Group 1 | Group 2 | Group 3 | Group 4 |
| a. engineering Cr: 10.5~13.0% C: 0.1~0.4% Typical grades: ASTM 410, 420 EN 1.4006, 1.4021, 1.4028, 1.4031, 1.4034 b. wear resistant Cr: 13.0~17.0% C: 0.40~1.00% Typical grades: ASTM 440A/B/C EN 1.4109, 1.4112, 1.4125 | Cr: 13~17.0% Ni: 2~5.0% C: ＜0.2% Typical grades: ASTM 431, S41500, F6NM, S165M EN 1.4057, 1.4313, 1.4418 | Cr: 15.0~17.0% Ni: 3.0~5.0% Cu: 3.0~5.0% Nb C: ＜0.1% Typical grades: ASTM S17400, S17700, S15700, S15500, S13800 630, 631, 632 17-4PH, 17-7PH, 15-7Mo, 15-5PH, 13-8Mo EN 1.4542, 1.4568, 1.4574, 1.4545, 1.4534 | Cr: 10.5~12.0% C: 0.1~0.25% Mo: 0.8~1.2% With Co, Nb, V, B additions Typical grades ASTM 422 EN 1.4913, 1.4923 |
JIS SUS420J1 stainless belongs to Group 1, a very popular martensitic stainless steel that is corrosion
resistant in water and steam.
Chemical composition ( weight % )
| Grade | C | Si | Mn | Cr |
| JIS SUS420J1 = EN 1.4021, DIN X20Cr13 = AISI 420A, UNS S42000 | 0.16~0.25 | 1.00 | 1.00 | 12.00~14.00 |
Typical applications
- Cutting utensils
- Surgical instruments
- Press plates
- Brake discs
- Mechanical parts
- Flanges and valves
Product forms
SUS420J1 stainless hot-rolled strip, cold-rolled strip, slit strip, narrow strip, precision strip steel, cut sheets
For Details, please Contact
Wuxi Guanglu Special Steel Co., Ltd. – your productivity partner for precision strip steel.
We are looking forward to your enquiries.
Please call +86 510-8181-2873
or send an email to export@guanglusteel.com
