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Low Expansion Alloy Plate Invar36 4J36 China Factory Supplier
As a reliable China manufacturer of 4J36 precision alloy plates, we offer custom thicknesses, competitive wholesale pricing, ASTM F1684 certified quality, and fast global delivery. Contact our China factory today for bulk Invar 36 / 4J36 low thermal expansion alloy plate quotes.
- Overview
- Specification
- Features & Applications
- FAQs
- Recommended Products
Product Introduction Overview
Invar36 (Chinese grade 4J36, also known as Alloy 36, Nilo 36, Pernifer 36) is a premium nickel-iron low expansion alloy plate renowned for its extremely low coefficient of thermal expansion. Produced to ASTM F1684 / UNS K93600 standards in our China factory, this controlled expansion alloy plate exhibits minimal dimensional change (CTE ≈ 1.0–2.0 × 10⁻⁶/°C from 20–200°C), roughly 1/10th that of standard steels.
As a professional China factory supplier, we specialize in thick Invar36 / 4J36 low expansion alloy plates with excellent cryogenic toughness, good machinability, and weldability. Perfect for wholesale buyers needing precision dimensional stability in temperature-varying environments—our direct-from-factory Invar 36 low thermal expansion plates deliver superior performance at competitive wholesale prices.
Product Features
Our Invar36 / 4J36 low expansion alloy plate stands out with these industry-leading properties:
- Ultra-low thermal expansion — CTE ≈ 1.2 × 10⁻⁶/°C (20–100°C), ensuring precision dimensional stability
- Excellent cryogenic performance — maintains strength and toughness down to liquid helium temperatures (-269°C)
- Good mechanical properties — tensile strength 450–600 MPa, easy to machine and weld like austenitic stainless
- High-purity nickel-iron composition — 36% Ni balance Fe, low impurities for consistent low expansion behavior
- Versatile plate thicknesses — from 5 mm to 50 mm+ (custom up to 100 mm), widths up to 2500 mm
- Direct China factory wholesale — ASTM-certified, competitive pricing, reliable bulk supply with global shipping
Choose our 4J36 / Invar36 low expansion nickel-iron alloy plate for demanding applications requiring controlled thermal expansion.
Product Applications
Invar36 / 4J36 low thermal expansion alloy plate is the material of choice for temperature-critical components worldwide:
- Cryogenic storage & transport — LNG tanks, piping, vessels, and liquefied gas equipment
- Aerospace composite tooling — molds, dies, jigs, and fixtures for carbon fiber parts
- Laser & optical systems — precision benches, laser housings, metrology standards, and alignment devices
- Scientific & measuring instruments — length standards, thermostats, seismic instruments, clock components
- Electronics & defense — shadow masks, electronic packages, magnetic shielding, satellite parts
Purchase wholesale Invar36 / 4J36 controlled expansion alloy plate from our China factory supplier to achieve unmatched stability in these high-precision fields.
Product FAQ
Q1: What is the exact thermal expansion coefficient of Invar36 / 4J36 low expansion alloy plate?
A: Invar36 (4J36) controlled expansion nickel-iron plate has an ultra-low CTE of about 1.0–1.6 × 10⁻⁶/°C from 20–100°C (per ASTM F1684), providing superior dimensional stability across wide temperature ranges.
Q2: What thicknesses are available for Invar36 / 4J36 low thermal expansion alloy plate wholesale?
A: As a China factory supplier, we offer Invar36 / 4J36 plates from 5 mm to 50 mm thick (thicker custom up to 100 mm), with widths up to 2500 mm and lengths customized—ideal for bulk wholesale orders.
Q3: Is Invar36 / 4J36 low expansion alloy plate suitable for cryogenic applications?
A: Yes—our 4J36 / Invar36 nickel-iron alloy plate excels in cryogenic environments, retaining toughness and low expansion down to -269°C, perfect for LNG and liquid gas systems.
Q4: How machinable and weldable is Invar36 4J36 controlled expansion alloy plate?
A: It machines and welds similarly to austenitic stainless steel using standard tools and GTAW/GMAW processes—our China-supplied plates ensure consistent quality for precision fabrication.
Q5: Why buy Invar36 / 4J36 low expansion alloy plate from your China factory supplier?
A: We provide ASTM F1684 / UNS K93600 certified material, strict quality control, factory-direct wholesale pricing, custom sizes, and reliable global export—ensuring the best value for international buyers of precision low thermal expansion plates.
