Nickel Alloy Plate

Sandmeyer Steel Company stocks SSC INVAR 36 nickel alloy plate in thicknesses from ¼" (6.3mm) through 4" (101.6mm). This dimensionally stable nickel alloy plate is available from stock in full plates or custom cut shapes.

Available thicknesses for SSC INVAR 36:

1/4" 3/8" 1/2" 5/8" 3/4" 1" 1 1/4"
6.3mm 9.5mm 12.7mm 15.9mm 19mm 25.4mm 31.8mm
 
1 1/2" 2" 2 1/2" 3" 3 1/2" 4"
38.1mm 50.8mm 63.5mm 76.2mm 88.9mm 101.6mm

Sandmeyer Steel Company is stocking SSC INVAR 36 nickel alloy plate for applications in the aerospace composite tooling and die market. The alloy is used extensively in these demanding conditions where dimensional stability is essential.

Any Way You Want It!
At Sandmeyer Steel Company, we have over 100 pieces of Value Added Plate Processing equipment all under one roof. You can purchase any custom shape or configuration you require to maximize plate yields. We can cut patterns utilizing five-axis abrasive waterjet, bandsaw, or laser. Our state-of-the-art plasma cutting system enables us to supply high-definition or plasma beveled products. We can also offer Machincut rings and discs up to 124" (3150mm) OD. Send us your drawings for finished or near-net shape parts, or we'd be happy to sell you full-size plates. At Sandmeyer Steel Company, we work with the customer!

Specification Sheet Overview

for SSC INVAR 36 (UNS K93603,)
W. Nr. 1.3912
For Aerospace Composite Tooling and Dies

General Properties

Nickel-Iron Alloy with a Very Low Coefficient of Thermal Expansion from Cryogenic Temperatures to 400°F (200°C)

SSC INVAR 36 nickel alloy plate (UNS K93603) is an austenitic nickel-iron alloy containing 36% nickel. It has an extremely low coefficient of thermal expansion from -418°F (-250°C) to 392°F (200°C). The alloy has good fatigue and mechanical properties at cryogenic temperatures. It exhibits moderately high strength along with good ductility and toughness. These properties along with good fabrication characteristics make SSC INVAR 36 nickel alloy plate ideal for applications requiring precise dimensional stability.

SC INVAR 36 nickel alloy plate can be hot and cold worked, machined, and formed. Fabrication processes are similar to austenitic stainless steels. The alloy can be welded using filler wire with expansion rates similar to those of the base metal.

SSC INVAR 36 nickel alloy plate resists corrosion in dry atmospheres at room temperature. In humid or moist atmospheres, corrosion can occur in the form of rust.


Applications

SSC INVAR 36 nickel alloy plate is utilized extensively in other industrial applications where dimensional stability is essential.

  • Tooling and Dies for Aerospace Composite Tooling
    • Thermoset Epoxy Systems
    • Resin Transfer Molded Tools
  • Cryogenic Components and Piping
  • Laser Components
  • Liquified Natural Gas (LNG)Marine fixtures and fasteners
    • Production and Storage Equipment
    • LNG Tanker Membranes
  • Marine Components
  • Wind Turbines

Standards/Material Certifications

ASTM......................... F1684-06
BOEING..................... D-33028-2

Chemical Analysis

Nickel 36.00% Chromium 0.25% max
Carbon 0.05% max Manganese 0.60% max
Silicon 0.40% max Cobalt 0.50% max
Phosphorus 0.015% max Sulfur 0.015% max
Aluminum 0.10% max Magnesium 0.10% max
Zirconium 0.10% max Titanium 0.10% max
Iron Balance

Physical Properties

Density

0.293 lbs/in3
8.11 g/cm3

Melting Point

2606°F
1430°C

Specific Heat

0.123 BTU/lb-°F
515 J/kg-°C

Typical Thermal Expansion of SSC INVAR 36

Temperature Range Total Expansion Mean Linear Coefficient
°C °F (10-3) (10-6/°C) (10-6/°F)
-200 - 20 -328 - 68 -0.33 1.5 0.8
-100 - 20 -148 - 68 -0.16 1.3 0.7
20 - 100 68 - 212 0.12 1.5 0.8
20 - 150 68 - 302 0.26 2.0 1.1
20 - 200 68 - 392 0.47 2.6 1.4
20 - 250 68 - 482 0.80 3.5 1.9
20 - 300 68 - 572 1.54 5.5 3.1
20 - 350 68 - 662 2.37 7.2 4.0
20 - 400 68 - 752 3.19 8.4 4.7
20 - 450 68 - 842 4.01 9.3 5.2
20 - 500 68 - 932 4.85 10.1 5.6

Electrical Resistivity

Temperature Microhm cm (ohm.circ mil/ft)
°C °F
20 68 80 (481)
100 212 86 (517)
200 392 97 (583)
300 572 105 (632)
400 752 111 (668)
500 932 117 (704)
600 1112 121 (728)

Mechanical Properties

Typical Room Temperature Mechanical Properties, Mill Annealed

Temperature Yield Strength
0.2% Offset
Tensile Strength Elongation on 50 mm
(2 inch) %
Reduction of Area %
°C °F (MPa) psi (MPa) psi
20 68 240 35.0 490 71.0 42 70

NOTE: The information and data in this product data sheet are accurate to the best of our knowledge and belief, but are intended for informational purposes only, and may be revised at any time without notice. Applications suggested for the materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications.

RA330® is a registered trademark of Rolled Alloys

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ASME
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