What material is 1.4057 ?
Material 1.4057 is a martensitic stainless steel, also known as AISI 431 or X17CrNi16-2, valued for its high strength, toughness, and moderate corrosion resistance. It is used in demanding applications like drive shafts, pump and valve components, and aerospace parts.
What is 1.4057 DIN equivalent to?
Data sheet according to DIN EN 10088 for material number 1.4057. The material AISI 431, which equals 1.4057, BS 431S29, and X17CrNi16-2, is a stainless martensitic chromium-nickel steel with a chromium content of 15-17 %.
Is 1.4057 similar to AISI 431?
Yes, 1.4057 is similar to AISI 431; in fact, they are the same material, with 1.4057 being the European (EN) designation and AISI 431 being the American one. Both are a type of martensitic stainless steel known for high strength and moderate corrosion resistance, and they are often used interchangeably in various applications.
1.4057 chemical composition
1.4057 stainless steel, is the comprehensive martensite grade for engineering applications. The exact composition varies, but an exemplary 1.4057 stainless steel will comprise: 15 – 17% chromium; 2 – 2.5% Nickel; 0.12 – 0.22% Carbon. It may also comprise small volumes of molybdenum, silicon, and phosphorous.
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431 (1.4057) Chemical Composition |
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| Grade | C | Mn | P | S | Si | Cr | Ni |
| 431 (1.4057) | 0.12 - 0.20 | 1.0 max | 0.04 max | 0.03 max | 1.0 max | 15.0 - 18.0 | 2.0 - 3.0 |
1.4057 QT800 Stainless Steel Mechanical Properties
| Delivery condition | Mechanical properties | Temperature | ||||||
| 100℃ | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ | 400℃ | ||
| +QT800 | The yield point, Re (MPa) | >515 | >495 | >475 | >460 | >440 | >405 | >355 |
| +QT900 | The yield point, Re (MPa) | >565 | >525 | >505 | >490 | >470 | >430 | >375 |
Is 1.4057 magnetic?
The material AISI 431 (1.4057, BS 431S29, X17CrNi16-2) is magnetic (ferromagnetic) and has a tensile strength of 800-950 N/mm² (in heat treatment condition +QT800) with a density of 7.0 kg/dm³ (at room temperature).
What is the yield of 1.4057?
The yield strength of 1.4057 stainless steel is at least \(600\) MPa when quenched and tempered (+QT800), and at least \(700\) MPa in the +QT900 condition. The exact yield strength depends on the specific heat treatment condition, as the material is often supplied in various states, such as annealed or quenched and tempered.
Heat treatment
Hardening at 950 – 975℃ for H17N2A, 975 – 1040℃ for H17N2 with cooling in oil
Tempering at 275 – 300℃ for H17N2A, for H2N17 in 275 – 350℃ in air
Heat and plastic treatment of 2H17N2
Rolling and forging at a temperature of 1150 – 900 ℃
At the GNEE warehouse, we stock 431 stainless steel in two heat-treated states: QT800 and QT900. QT indicates quenched and tempered, and the number 800 or 900 indicates the material's minimum tensile strength. Therefore, if 1.4057 material is in the QT800 heat-treated state, it means that the material's minimum tensile strength is 800 MPa.
1.4057 stainless steel is used in shaft parts, pump parts, mold parts, and in the chemical industry.
