合金钢板材
产品描述
英瓦 36（Invar 36，UNS K93600，W.Nr. 1.3912，国标 4J36）是一种含 36% 镍的铁镍低膨胀合金，俗称"殷钢"或"因瓦合金"。从低温至约 260°C 范围内，其平均线膨胀系数仅约 1.0×10⁻⁶/°C，相当于普通碳钢的十分之一，尺寸几乎不随温度变化，是公差极小的仪器仪表、光学系统、低温设备与温控双金属元件的首选材料。本品可按 ASTM B388 / B753（板材、带材）、B753 / F1684（棒材、锻件）、B751 / B829（管材）供应多种形状。典型应用工艺：退火后抗拉强度 ≥490 MPa、屈服强度 ≥240 MPa、延伸率 ≥42%、硬度 ≤200 HB，可焊接、可冷加工、可机加工。可应于 LNG/LIN/LHe 低温储存运输、长度标准、激光测温和激光光路、光纤护套、卫星和飞行控制、精密金属模具、双金属恒温条、避空器和传感器罩。
尺寸范围
- Sheet Thickness: 0.1–3.0 mm
- Sheet Width: 10–1,000 mm
- Sheet Length: 100–2,000 mm
- Plate Thickness: 4–130 mm
- Plate Width: 100–2,000 mm
- Plate Length: 100–6,000 mm
- Surface Condition: As supplied, annealed, or processed finish subject to availability
牌号标准
| 标准体系 | 数值 |
|---|---|
| 🇺🇸 ASTM | Invar 36, Alloy 36, UNS K93600 / K93601 / K93603 |
| DIN / Werkstoff | 1.3912, Vacodil 36 |
| SEW | SEW 385 |
| China (YB) | 4J36 (YB/T 5241) |
| Russia (GOST) | 26H, Fe-Ni36 |
| France (AFNOR) | NF A54-301 |
化学成分
| 元素 | 数值 |
|---|---|
| Nickel (Ni) | 35.0–38.0% |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.10% |
| Manganese (Mn) | ≤ 0.60% |
| Silicon (Si) | ≤ 0.35% |
| Phosphorus (P) | ≤ 0.025% |
| Sulfur (S) | ≤ 0.025% |
| Chromium (Cr) | ≤ 0.50% |
| Molybdenum (Mo) | ≤ 0.50% |
| Cobalt (Co) | ≤ 1.00% |
机械性能
| 性能 | 数值 |
|---|---|
| Tensile Strength | ≥ 490 MPa |
| Yield Strength (0.2% Offset) | ≥ 240 MPa |
| Elongation | ≥ 42% |
| Hardness | ≤ 135 HB |
| Modulus of Elasticity | 141 GPa (Typical Value) |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | - | 8.05 g/cm³ |
| Specific Gravity | - | 8.05 |
| Thermal Conductivity (20 °C) | - | ~11 W/(m·K) |
| CTE 20 – 100 °C | - | ≤ 1.0 × 10⁻⁶ / °C |
| CTE 20 – 200 °C | - | ≤ 2.0 × 10⁻⁶ / °C |
| CTE 20 – 300 °C | - | ≤ 5.0 × 10⁻⁶ / °C |
| CTE 20 – 400 °C | - | ≤ 8.0 × 10⁻⁶ / °C |
| CTE 20 – 500 °C | - | ≤ 10.0 × 10⁻⁶ / °C |
应用场景
- Cryogenic Systems — LNG, LIN and LHe storage tanks, transfer lines, pump housings, cryostat structures, valve bodies, fittings and flange hubs.
- Length Standards & Metrology — Reference standards, interferometer components, precision scales, gauge blocks.
- Optical & Laser Systems — Optical benches, mounts, laser cavities, mirror substrates, dimensionally stable housings.
- Bi-metal Thermostats — Low-expansion member of bi-metal strips paired with high-expansion alloys such as Invar 42.
- Aerospace — Composite curing moulds for aircraft wing skins, satellite and missile electronics frames, cryogenic fuel lines, low-drift antennae and waveguides.
- Electronics & Semiconductor — Shadow masks for CRT displays, lead-frame material, hard-drive dimensional components.
- Horology — Balance-wheel staff, hairspring wire, pendulum rods, precision clock components.
- Scientific Instrumentation — Particle-accelerator, mass-spectrometer and MRI cryostat structural components.