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Invar 36 round alloy bar K93603 steel bar price
Invar 36 is a nickel-iron,low expansion,alloy containing 36% nickel.It maintains nearly constant dimensions over the range of normal atmospheric temperatures,and has a low coefficient of expansion from cryogenic temperatures of about 500.The alloy also retains good strength and thoughness at cryogenic temperatures.
Invar 36 can be hot and cold formed and machined using processes similar to austenitic stainless steels.Invar 36 is weldable using Filler Metal CF36 which is available in bare wire for both the GTAW and GMAW process.
Invar36 use oxyacetylene welding, electric arc welding, welding and other welding methods. Since the coefficient of expansion and chemical composition of the alloy is related should be avoided due to welding causes a change in the alloy composition, it is preferable to use Argon arc welding welding filler metals preferably contains 0.5% to 1.5% titanium, in order to reduce weld porosity and crack.
| Ni | Cr | Fe | C | Mn | Si | Co | P | S | |
| MIN | 35 | ||||||||
| MAX | 37 | 0.2 | Margin | 0.03 | 0.35 | 0.2 | 0.5 | 0.02 | 0.01 |
| Cold rolled strip | Hot rolled flat bar | Hot forging bar | Cold pulling wire | Cold pulling bar |
| 0.01-2.5 x1-400 | 2.5-20 x 5-400 | Φ12-400x1000 | Φ0.05-2.0 x L | Φ2.0-12 x L |
| Type | Feature | Usage |
| 4J32,4J36 | Low coefficiency of thermal expension under 20~100°C | Kinds of instrument needs stable sizes; Parts of instrument; Resonance chase. |
| 4J38 | Low coefficiency of thermal expension under 20~100°C Easy to be cut | Kinds of instrument needs stable sizes; Parts of instrument; Resonance chase. |
| 4J40 | Low coefficiency of thermal expension under 20~100°C | Resonance chase of klystrin, microwave tube in electrical vacuum industry. |
| 4J06,4J47,4J49 | Simlar coefficiency of thermal expension as soft glass’under certain temperature range | Match with soft glass in electrical vacuum industry. |
| 4J42,4J45,4J50 | Some coefficiency of thermal expension under certain temperature range | Match with soft glass and ceramic in electrical vacuum industry. |
| 4J29 | Simlar coefficiency of thermal expension as hard glass’under certain temperature range | Match with hard glass in electrical vacuum industry. |
| 4J44 | Some coefficiency of thermal expension under 20~500°C | Match with hard glass in electrical vacuum industry. |
| 4J28 | coefficiency of thermal expension under certain temperature range corrision-resisting | Match with soft glass in electrical vacuum industry. |
| 4J43 | Some coefficiency of thermal expension under 20~400°C | dumet wire chip |
| 4J33,4J34 | Simlar coefficiency of thermal expension as 95%AI2O3 ceramic’under -60~+600°C | Match with 95%AI2O3 ceramic in electrical vacuum industry. |
| 4J58 | Some coefficiency of thermal expension under 20~50°C | High-precision Line Scale |
| 4J78,4J80,4J82 | Medium coefficiency of thermal expension under 0~600°C ; No megnetic, corrision-resisting; high strength and tenacity. | Gyro and other ceramic |
Features:
Low expansion rate up to 500
Readily weldable
Application:
Tooling and dies for composite forming
Cryogenic components
Laser components
