Ni36 Cold Rolled Steel Strip — Recommended for High-Precision Low-Expansion Special Saw Blades and Precision Laser Substrates
Ni36 cold rolled steel strip features uniform and dense internal microstructure, excellent surface flatness, stable laser cutting forming, and high cut finish. It is widely used in temperature-controlled precision circular saw blades, optical laser cutting substrates, and high-precision precision tooling substrates. The product undergoes precision cold rolling and stabilization annealing, offering extremely high dimensional accuracy and uniform, stress-free surfaces. Its core characteristic is ultra-low thermal expansion, with minimal dimensional deformation under temperature changes, making it a premium substrate for special saw blades and precision components operating under large temperature fluctuations and high-precision conditions.
Chemical Composition & Standards
Product Grade: Ni36 (4J36 Invar) | Standard: GB/T 15018 / Longsheng Sheet Co., Ltd. Enterprise Standard
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C
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Si
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Mn
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P
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S
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Cr
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Ni
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≤0.05
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0.20~0.30
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0.20~0.60
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≤0.02
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≤0.02
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≤0.20
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35.0~37.0
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Ni36 is an iron-nickel low-expansion precision alloy with stable nickel content around 36%. It achieves an extremely low coefficient of thermal expansion through its special lattice structure. Sulfur and phosphorus impurities are strictly controlled, ensuring high material purity and strong microstructural stability with minimal deformation during temperature changes. It is suitable for manufacturing precision saw blades and instrument accessories requiring constant dimensions in high-temperature and variable-temperature environments.
Product Performance
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Performance Indicator
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Value Range
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Main Finished Thickness (mm)
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0.08 ~ 4.3
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Yield Strength (MPa)
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240 ~ 370
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Tensile Strength (MPa)
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450 ~ 650
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Elongation After Fracture (%)
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≥30
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Hardness (HV)
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135 ~ 175
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The product features fine and uniform grains, with smooth and flat surfaces compatible with laser cutting processes, producing clean cuts with minimal burrs. The annealed hardness is relatively low with excellent plasticity, allowing easy and convenient bending, stamping, and finishing. It offers outstanding thermal stability, with a coefficient of thermal expansion far below that of ordinary steels in the -200°C to 230°C range. Saw blades made from this material resist thermal expansion and contraction deformation during long-term alternating high-low temperature conditions, maintaining long-term dimensional stability.
Product Applications
Precision temperature-controlled circular saw blades, high-precision saw blade substrates, laser precision cutting materials, optical instrument accessories, semiconductor precision substrates, cryogenic equipment components, precision measuring tools, constant-temperature dies
Supply Specifications
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Item
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Parameter Details
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Strip Steel Specification
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(0.2-5.0) X (700-1250)mm
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Max Coil Weight
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27.6 Tons
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Coil Inner Diameter
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Φ508mm / Φ610mm
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Coil Outer Diameter
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Φ900~2000mm
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Oil Coating Type
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Anti-Rust Oil Coating
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Surface Treatment
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Bright / Matte / Customized
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