Invar 36 Bar and Rod Supplier | Nickel-Iron Low Expansion Alloy

Name: Invar 36 Bar and Rod Supplier | Nickel-Iron Low Expansion Alloy
Brand: Vertex Alloy
SKU: a2db603a-a3e0-451b-acf0-e53ce6b8dcc3

Alloy SteelBar/Rod

Invar 36 nickel iron low thermal expansion alloy round bar and rod

1/5

Description (English)

Invar 36 bar and rod are nickel-iron alloy products containing approximately 36% nickel. The alloy is known for low thermal expansion over a specific temperature range and is used in selected precision machining and instrument applications. Material Characteristics Low thermal expansion over a defined temperature range Suitable for selected precision-machined components Available material conditions depend on supplier capability Technical documentation subject to supplier confirmation

Size Range

Diameter: 3–280 mm
Length: 500–6,000 mm

Grade Specification

System	Value
Material Name	Invar 36 / Alloy 36
Number	1.3912
UNS Designation	K93600 / K93603
Standard	ASTM F1684
Material Family	Nickel-Iron Controlled Expansion Alloy
Nominal Nickel Content	Approximately 36% Iron: Balance

Chemical Composition

Element	Value
Ni	35.0–38.0%
Fe	Balance
C	≤ 0.10%
Mn	≤ 0.60%
Si	≤ 0.35%
P	≤ 0.025%
S	≤ 0.025%
Cr	≤ 0.50%
Mo	≤ 0.50%
Co	≤ 1.00%

Mechanical Properties

Property	Value
Yield Strength (0.2% Offset)	483 MPa
Tensile Strength:	621 MPa
Elongation	20%
Hardness	90 HRB

Applications

precision fixtures
measuring instruments
optical assemblies
machined components
specialized industrial equipment