Home >Invar 36 Bar
Marsh Nickel Alloys is a trusted manufacturer and supplier of high quality nickel alloy products in Canberra, Australia. Known for their expertise and commitment to excellence, the company offers a wide range of specialty blends, including Inwar 36 wood. Known for its extremely low temperature expansion, Invar 36 is ideal for precision mechanical, aerospace applications and cryogenic systems.Marsh Nickel Alloy’s focus on quality, durability and precision ensures a unique solution that suits engineering needs.
Marsh Nickel Alloys stands out as a premier manufacturer and supplier based in Canberra, Australia, with a focus on high-precision Invar-36 bars. Thanks to their cutting-edge metallurgical capabilities and rigorous quality control, they excel in producing controlled-expansion alloys. This means that when you choose Invar-36 bars from Marsh Nickel Alloys, you’re getting products known for their exceptional dimensional stability and mechanical consistency. They cater to a variety of industries, including aerospace, optics, scientific instrumentation, and engineering, offering custom-machined bar stock, dependable traceability, and finishes that meet international standards. For clients who need minimal thermal expansion and consistent performance in changing temperatures, Marsh Nickel Alloys is the go-to partner.
| Standards : | ASTM F1684, ASME SF1684 |
| Dimensions : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Wire : | Thickness starting from 0.05mm |
| Round bar size : | Diameter: 3-~800mm |
| Hex Bar size : | 2-100mm A/F |
| Flat bar size : | Thickness: 2 -100mm / Width: 10 to 500mm |
| Square bar size : | 4 to 100mm |
| Rectangular Bars Size : | 33 x 30mm to 295 x 1066mm |
| Hollow Bar : | 32mm OD x 16mm ID to 250mm OD x 200mm ID |
| Tolerance : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Finish : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Grade | C | Mn | Si | S | Fe | Ni | Cr | P | Mo | Co |
| Invar 36 | 0.10 max | 0.06 max | 0.35 max | 0.025 max | Rem | 35-38 | 0.50 max | 0.025 max | 0.50 max | 1.0 max |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Psi – 71,000 , MPa – 490 | Psi – 35,000 , MPa – 240 | 42 % |
Invar-36 is made up of roughly 35-38% nickel, with the rest being iron, and it contains very low levels of carbon, sulfur, phosphorus, and other impurities. Its mechanical properties are impressive, featuring a tensile strength of about 490-620 MPa, yield strength ranging from 240-345 MPa, and elongation typically between 30-45%, depending on the temper and condition. The modulus of elasticity is around 141-148 GPa. Plus, this alloy boasts a remarkably low coefficient of thermal expansion (approximately 1–2 ×10⁻⁶ /°C) across a useful operating temperature range of about 200-260°C.
Contact us to get a quick quote for your requirement.
Marsh Nickel Alloys’ Invar-36 bars are essential in applications where high dimensional stability is crucial. You’ll find them in precision tooling and molds (especially for composite manufacturing), frames or supports in optical systems, gauges and measurement devices, thermostats and bimetallic components, as well as instrument components in cryogenics and structural parts in aerospace, where temperature fluctuations could cause distortion.
