ASTM A532 Class III Type A chemical composition
25% Cr type of ASTM A532 and its most corrosion-resistant class, with a carbide phase made up predominantly of chromium carbides. Supplied as cast, annealed for machining or hardened, for slurry pump casings and impellers, crusher and chute liners, and wear parts in cement and flue-gas desulfurisation plants.
- Designation
- ASTM A532 Class III Type A
- Standard
- ASTM A532
- Also known as
- ASTM A532 III-A, A532 Class III Type A, 25% Cr white iron, ≈ G-X260Cr27 (0.9650), ≈ G-X300CrMo27-1 (0.9655), ≈ EN-GJN-HV600(XCr23), ≈ EN-GJN-HB555(XCr23)
- Family
- High-chromium white cast iron
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | 2.00 | 3.30 |
| SiSilicon | – | 1.50 |
| MnManganese | – | 2.00 |
| PPhosphorus | – | 0.10 |
| SSulphur | – | 0.06 |
| CrChromium | 23.0 | 30.0 |
| NiNickel | – | 2.50 |
| MoMolybdenum | – | 3.00 |
| CuCopper | – | 1.20 |
| FeIron | remainder | |
Basis of values: Limits per ASTM A532.
We cast ASTM A532 Class III Type A
We sand cast high-chromium white iron wear parts for quarry and cement service, with GX300CrMo15-3 as our standard mill grade and further grades from 15 % to 27 % Cr, heat treat them in-house and machine them on CNC equipment in the group's own machine shop. Every melt is checked by spectrometer analysis, hardness is verified on our own tester, and EN 10204 3.1 certificates are available.
- Sand casting at our foundry in Mandra, Attica; centrifugal casting for bushings, sleeves and liners
- Heat treatment at the foundry (water, oil or air quench); CNC machining in our machine shop in Perama
- Spectrometer analysis of every heat, mechanical testing and NDT
- EN 10204 3.1 inspection certificates; ISO 9001 (both plants) and ISO 14001 (foundry) certified
Other grades in this family
For information only, without warranty: limits per the cited standard or, where stated, typical or house values; ≈ marks a comparable grade, not an equivalent. The current edition of the standard, the purchase order and the drawing govern.