Material Category | Typical Materials & Grades | Key Applications | Critical Properties |
---|---|---|---|
High-Temperature Materials | 12Cr1MoVG heat-resistant steel Inconel 690 nickel-based alloy | Boilers, nuclear steam generators | Creep resistance (>600°C), corrosion resistance |
Magnetic & Structural Materials | 30Q120 low-core-loss silicon steel Q235B carbon steel | Transformer cores, structural supports | Permeability >1.8T, core loss <1.2W/kg (30Q120) |
Conductive & Insulation Materials | Oxygen-free copper (OFC) Cross-linked polyethylene (XLPE) | HV cable conductors, insulation | Conductivity ≥100% IACS (copper) Breakdown strength ≥30kV/mm (XLPE) |
Wear-Resistant & Protective Alloys | NM450 wear-resistant steel Hastelloy C-276 | Coal handling systems, corrosive environments | Surface hardness ≥450HBW (NM450) PREN ≥65 (C-276) |
Emerging Technologies | Silicon carbide (SiC) semiconductors NdFeB permanent magnets | HVDC transmission, PMSM systems | Voltage tolerance ≥10kV (SiC) Energy product ≥50MGOe (NdFeB) |