Обзор
AISI 431 is a martensitic stainless steel plate containing 15–17% chromium and 1.25–2.50% nickel. It is a heat-treatable (hardened and tempered) stainless steel that offers an excellent combination of high strength, good hardness, moderate corrosion resistance, and superior toughness — notably better toughness than other martensitic grades like 410 and 420, thanks to its nickel addition.
Описание (Английский)
AISI 431 is a martensitic stainless steel plate containing 15–17% chromium and 1.25–2.50% nickel. It is a heat-treatable (hardened and tempered) stainless steel that offers an excellent combination of high strength, good hardness, moderate corrosion resistance, and superior toughness — notably better toughness than other martensitic grades like 410 and 420, thanks to its nickel addition.
Диапазон Размеров
- Up to 150mm
Спецификация Марки
| Система | Значение |
|---|---|
| 🇺🇸 UNS | S43100 |
| 🇺🇸 AISI | 431 (Type 431) |
| EN / DIN | 1.4057 (X17CrNi16-2) |
| 🇯🇵 JIS | SUS431 |
| 🇨🇳 GB | 14Cr17Ni2 (1Cr17Ni2) |
Химический Состав
| Элемент | Значение |
|---|---|
| C | ≤ 0.20 |
| Si | ≤ 1.00 |
| Mn | ≤ 1.00 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Cr | 15.0 – 17.0 |
| Ni | 1.25 – 2.50 |
| Mo | - |
| Fe | Balance |
Механические Свойства
| productCenter.property | Значение |
|---|---|
| Tensile Strength Rm | 655 MPa (95 ksi) |
| Yield Strength Rp0.2 | 415 MPa (60 ksi) |
| Elongation A | 20% |
| Hardness | ≤ 295 HB |
Физические Свойства
| Свойство | Единица | Значение |
|---|---|---|
| Density | g/cm³ | 7.70 – 7.75 g/cm³ |
| Melting Point Range | °C | ~1,420 – 1,510 °C |
| Modulus of Elasticity | GPa | 200 GPa |
| Shear Modulus | - | 77 GPa |
| Poisson's Ratio | - | 0.30 |
| Thermal Conductivity (20°C) | W/m·K | 25 – 30 W/(m·K) |
| Coefficient of Thermal Expansion (20–100°C) | ×10⁻⁶/K | 10.0 – 11.0 ppm/°C |
| Specific Heat (20°C) | J/kg·K | 0.46 kJ/(kg·K) |
| Electrical Resistivity | μΩ·cm | ~0.70 μΩ·m |
| Magnetism | - | Strongly magnetic (ferromagnetic) |
Применение
- Marine & Shipbuilding
- Aerospace
- Oil & Gas
- Automotive
- General Engineering
- Chemical Processing
- Food Processing
- Defense / Military
- Paper & Pulp
- Medical / Surgical