Industrial metal background

Invar 36 Alloy Tube Supplier | UNS K93600 / 4J36 Low Expansion Nickel-Iron Tubing

合金钢管材
Invar 36 alloy tube supplied by Shanghai Vertex Alloy Co., Ltd — UNS K93600 / W.Nr 1.3912 / GB 4J36 low expansion nickel-iron alloy tubing to ASTM F1684 with CTE of only 1.2–1.5 × 10⁻⁶/K for LNG piping, laser systems and precision instruments.
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产品描述

上海顶点合金有限公司(Shanghai Vertex Alloy Co., Ltd,简称 Vertex Alloy)供应殷瓦36合金管(Invar 36 / UNS K93600 / W.Nr 1.3912 / FeNi36,国标 4J36)。Invar 36 是含镍 36% 的铁镍低膨胀合金,20–100°C 热膨胀系数仅 1.2–1.5×10⁻⁶/K,约为碳钢的十分之一,是商用金属中膨胀系数最低的材料,且在低温(至 -250°C)保持良好强度与韧性。产品为无缝管及焊管,执行 ASTM F1684 标准,外径 6–219mm、壁厚 0.5–15mm,退火或硬态交货,附 EN 10204 3.1 材质证明,亦可定制毛细管。广泛用于 LNG 储运管路、激光谐振腔管、光学结构、波导、标准量具及复合材料成型模具等对尺寸稳定性要求极高的场合。注:Invar® 为 Aperam Imphy 注册商标,我司供应的是符合 ASTM F1684 的同等 4J36 低膨胀合金。

尺寸范围

  • OD: 6–219 mm
  • WT:0.5–15 mm
  • L: Up to 6,000 mm, cut-to-length available

牌号标准

标准体系数值
USA (UNS)K93600 (also K93601 / K93603)
Germany (W.Nr)1.3912 / FeNi36
China (GB) 4J36
Commercial Names Invar 36 (Aperam Imphy), Nilo 36, Pernifer 36
Product StandardASTM F1684
Reference StandardsASTM B753, SEW 385, NF A54-301

化学成分

元素数值
NI35.0–37.0
C≤ 0.05
Mn≤ 0.60
Si≤ 0.35
Co≤ 0.50
Cr≤ 0.50
P≤ 0.025
S≤ 0.025
FeBalance

机械性能

性能数值
Tensile Strength 450–585 MPa
Yield Strength (0.2%) 240–275 MPa
Elongation (50 mm) 30–45%
Hardness140–160 HB
Cryogenic ToughnessGood down to −250°C

物理性能

性能单位数值
Density-8.11 g/cm³
Melting Point-≈ 1,430°C
CTE (20–100°C)-1.2–1.5 × 10⁻⁶ /K
CTE (20–200°C)- ≈ 2.6 × 10⁻⁶ /K
Curie / Inflection Point- ≈ 220–230°C
Thermal Conductivity (20°C)-10.0–10.5 W/(m·K)
Magnetic-Yes (below Curie point)

应用场景

  • LNG / Cryogenic:LNG tank & piping systems;Membrane tank support components;
  • Laser & Optics: Laser resonator tubes; Optical benches, telescope structures
  • Precision Instruments:Standards of length, metrology devices;Waveguide tubes
  • Aerospace:Satellite structures; Composite tooling & molds
  • Electronics: Thermostat rods, shadow masks
  • Scientific: Cryogenic research apparatus