What is 1.4021 stainless steel equivalent to?
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What is 1.4021 Stainless Steel?
1.4021 stainless steel is a martensitic stainless steel known for its high hardness, moderate corrosion resistance, and excellent polishability after heat treatment. It contains around 0.2% carbon and 13% chromium, making it ideal for applications requiring wear resistance, such as pump shafts, knife blades, or surgical tools.
1.4021 Stainless Steel Equivalent Grades
| EU EN |
USA - |
Germany DIN,WNr |
Japan JIS |
France AFNOR |
England BS |
China GB |
Sweden SS |
Poland PN |
Czechia CSN |
Russia GOST |
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| X20Cr13 |
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Is 1.4021 the same as AISI 420?
Yes. 1.4021 is equivalent to AISI 420A or Type 420, both being martensitic stainless steels with similar carbon and chromium levels. However, AISI 420 may also include variants with higher carbon content (e.g., 420C), so checking specific requirements is recommended.
Chemical Composition of 1.4021 Stainless Steel
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.16 – 0.25 |
| Chromium (Cr) | 12.0 – 14.0 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
EN1.4021 Stainless Steel Mechanical Properties
| Mechanical Properties | |||||||||||
| Country (Region) | Standard | Steel Grade (Steel Number) | Product Condition | Heat treatment condition | Thickness (mm), ≤ | Hardness, HRB (HBW or HV) | 0,2 % yield strength, Mpa (ksi), ≥ | Tensile strength, Mpa (ksi) | Elongation, %, ≥, (long. + tr.) | Impact energy (ISO-V), KV2 >10mm thick, ≥ J | Rockwell Hardness, HRC (HV) |
| European Union | EN 10088-2 | X20Cr13 (1.4021) | cold rolled strip | +QT | 3 | – | – | – | – | – | 44-50 (440-530) |
| cold rolled strip | +A | 8 | 95 (225) | – | 700 (101), ≤ | 15 | – | – | |||
| Hot rolled strip | +A | 13,5 | |||||||||
| Hot rolled plate | +QT650 | 75 | – | 450 (65) | 650-850 (94-123) | 12 | by agreement | – | |||
| Hot rolled plate | +QT750 | 550 (80) | 750-950 (108-137) | 10 | |||||||
| Notes: | |||||||||||
Notes:
+A: Annealed,
+QT: Quenched and Tempered.
Is 1.4021 magnetic?
Yes. As a martensitic grade, 1.4021 is strongly magnetic even after heat treatment.
EN1.4021 Stainless Steel Heat treatment condition
| Proof strength at elevated temperatures | ||||
| Standard | Steel name (Material number) | Heat treatment condition | Temperature, °C ( °F) | 0,2% proof strength, Mpa (ksi), ≥ |
| EN 10088-2 | X20Cr13 (1.4021) | +QT650 | 100 (212) | 420 (61) |
| 150 (302) | 410 (59) | |||
| 200 (392) | 400 (58) | |||
| 250 (482) | 385 (56) | |||
| 300 (572) | 365 (53) | |||
| 350 (662) | 335 (48) | |||
| 400 (752) | 305 (44) | |||
Can 1.4021 be hardened?
Yes, it is fully heat treatable. After quenching and tempering, it can achieve hardness levels up to 50 HRC or more, making it suitable for cutting or tooling applications.
What is the difference between 1.4021 and 1.4301?
1.4021 is harder and more wear-resistant, but has lower corrosion resistance than 1.4301. It's preferred in applications where mechanical strength or edge retention is more important than corrosion resistance.
What is the standard of X20Cr13 stainless steel ?
| Grade : | X20Cr13 | |||||||
| Number: | 1.4021 | |||||||
| Classification: | Martensitic stainless steel | |||||||
| Density: | 7.7 g/cm ³ | |||||||
| Standard: |
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Gnee supplies 1.4021 stainless steel sheets, plates, and round bars with full traceability and rapid delivery. Whether you're sourcing for industrial parts or precision tools, we ensure consistent quality and technical expertise.
Our advantages
1.Strict control of carbon, sulfur, and chromium content for predictable hardening and corrosion resistance
2.Available in hot rolled, cold rolled, annealed, and quenched-tempered conditions; cut-to-length or precision slit
3.Free consultation on machining, heat treatment, and surface finish options
