Alloy SteelOthers
Description (English)
ILLIUM B is supplied as castings in the 2100°F air-cooled condition, delivering yield strength of 400 MPa, tensile strength of 414 MPa, elongation of 1%, and hardness of 221-420 HB. The low elongation (1%) and high hardness range indicate that the alloy is a hard, wear-resistant material suitable for cast components subject to erosion-corrosion. ILLIUM B is widely used in chemical processing for handling hot sulfuric acid, hot phosphoric acid, nitric acid, and mixed oxidizing acid solutions.
Size Range
- Castings: Custom size per drawing
- Valve bodies: DN15 - DN600 (1/2" - 24")
- Pump casings and impellers: Custom size
- Fittings: Custom size per drawing
Grade Specification
| System | Value |
|---|---|
| Castings | ASTM A 494, Ni-Cr-Mo-Cu type |
Chemical Composition
| Element | Value |
|---|---|
| Ni | bal |
| Cr | 28 |
| Mo | 8.5 |
| Cu | 5.5 |
| Si | 3.5 |
| C | 0.05 |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (0.2% offset) | 400 MPa |
| Tensile Strength | 414 MPa |
| Elongation (in 2 in) | 1% |
| Hardness | 221-420 HB |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density | - | 0.308 lb/cu in |
| Specific Gravity | - | 8.53 |
| Melting Point | - | 2400 °F |
| Specific Heat (32-212°F | - | 0.105 Btu/lb/°F |
| Thermal Expansion Coefficient (32-212°F) | - | 7.0 in/in/°F × 10⁻⁶ |
| Thermal Conductivity (32-212°F) | - | 95 Btu/sq ft/hr/°F/in |
| Electrical Resistivity (68°F) | - | 730 ohms/cir mil ft |
| Tensile Modulus of Elasticity | - | 28.0 × 10⁶ psi |
Applications
- - Nitric acid handling
- - Hot concentrated sulfuric acid equipment
- - Hot phosphoric acid processing
- - Mixed oxidizing acid solutions
- - Chemical process valves and pumps
- - Cast fittings and pipe components
- - Erosion-corrosion resistant components