Download AS/NZS HA250 Steel Data Sheet (PDF)
HA250 Steel Technical Overview
HA250 steel plate delivers guaranteed structural strength with a minimum yield strength of 250 MPa. In addition, TIASCO procures and processes this hot-rolled grade strictly to comply with AS/NZS 1594 specifications. Consequently, fabricators achieve exceptional ductility, uniform elongation, and dependable cold formability across diverse structural projects. Therefore, this material performs reliably in both heavy infrastructure and precision sheet profiling.
Furthermore, precision roller-leveling equipment relieves internal residual stresses across every plate and coil. As a result, the low-memory material maintains superior flatness during CNC fiber laser, plasma, and waterjet cutting. Accordingly, machine operators eliminate post-cutting distortion, edge lifting, and expensive rework.
Moreover, the steel provides outstanding weldability across standard methods—including GMAW, GTAW, and SAW—without preheating under normal shop conditions. Specifically, its homogeneous fine-grained microstructure enables tight-radius bending both longitudinal and transverse to the rolling direction. For this reason, structural engineers frequently specify this grade for vehicle chassis, transport components, and roll-formed profiles.
Additionally, strict metallurgical practices keep silicon and phosphorus levels within optimal chemical limits. Thus, this balanced composition ensures uniform zinc reactivity during hot-dip galvanizing. Ultimately, fabricators obtain a smooth, durable, and highly adherent protective coating that withstands harsh outdoor environments.
Fabrication, Forming, and Welding Guidelines
Furthermore, this grade offers outstanding weldability across standard industrial techniques—including GMAW (MIG), GTAW (TIG), and submerged arc welding (SAW)—due to its low carbon equivalent (CEQ) chemistry. As a result, normal ambient shop temperatures require no preheating for standard plate thicknesses, effectively mitigating heat-affected zone (HAZ) cracking. Specifically, the uniform fine-grain microstructure delivers dependable tight-radius cold bending performance both longitudinal and transverse to the rolling direction. Therefore, fabricators frequently select this grade for heavy structural cross-members, chassis frames, and agricultural machinery.
Surface Quality and Galvanizing Suitability
Moreover, TIASCO supplies this material in diverse surface conditions, including black hot-rolled, pickled and oiled (P&O), and shot-blasted finishes. Additionally, strict chemical batch controls maintain silicon and phosphorus contents within optimal metallurgical limits. Consequently, hot-dip galvanizers achieve uniform zinc-iron alloy layer growth, preventing excessive coating brittleness or mottled grey appearances.
Chemical Composition (Max Weight %)
| Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|
| ≤ 0.25 | ≤ 1.20 | ≤ 0.35 | ≤ 0.040 | ≤ 0.030 |
Mechanical & Physical Benchmarks
| Yield Strength | Tensile Strength | Elongation | Density |
|---|---|---|---|
| ≥ 250 MPa | ≥ 350 MPa | ≥ 22 % | 7.85 g/cm³ |
HA250 Steel Plate Dimensional Capabilities Matrix
| Parameters | Available Range / Formats |
|---|---|
| Thickness Capability | 1.2 mm up to 25.0 mm |
| Available Widths | 50 mm ~ 1865 mm (Standard: 1000, 1220, 1500, 1800 mm) |
| Length / Cutting Range | 500 mm up to 22,000 mm (Cut-to-length processing available) |
| Edge & Tolerances | AS/NZS 1365 Class A & B flatness; Mill Edge or Trimmed Edge |
Engineering Desk & RFQ Submission:
TIASCO provides full mill test certification (EN 10204 3.1) with each shipment to guarantee melt heat traceability. Custom slitting, decoiling, and non-standard gauge requests are reviewed directly by our technical staff. Submit your drawing profiles or project bill of materials to our Engineering Procurement Desk for a formal commercial offer within 24 hours.
