Shanghai, September 12, 2025, 07:10 AM PDT – SHH STEEL, a steel fabrication expert, details key steel plate processing techniques—cutting, welding, and heat treatment—to guide buyers in optimizing material performance for construction, marine, and industrial applications. These processes enhance steel properties like ASTM A36, 316L (ASTM A240), and FH36 (DNV standards), ensuring structural integrity and compliance.
| Process | Technology | Material Compatibility | Thickness Range (mm) | Key Standard |
| Cutting | Laser, Waterjet, Plasma | Stainless, Carbon, Titanium | 0.5 – 150 | ISO 9013 |
| Welding | MIG, TIG, Robotic | Carbon, Stainless, Nickel | 1 – 150 | AWS D1.1 |
| Heat Treatment | Normalizing, Stress Relief | Carbon, Stainless, Clad | 6 – 200 | ASME SA-20 |
Cutting Techniques Cutting shapes steel for fabrication. Laser cutting (ISO 9013) achieves ±0.1 mm precision on 40mm 316L, waterjet handles 150mm FH36 without heat distortion, and plasma cuts 100mm A36 at 6m/min.
| Method | Speed (m/min) | Tolerance (±mm) | Material Example | Surface Finish (Ra μm) | Application |
| Laser Cutting | 10 | 0.1 | 316L (ASTM A240) | 3.2 | Marine panels |
| Waterjet Cutting | 1 (single pass) | 0.2 | FH36 (DNV) | 6.3 | Thick ship plates |
| Plasma Cutting | 6 | 0.3 | A36 (ASTM A36) | 12.5 | Structural frames |
Technical Data: Laser cutting reduces kerf width to 0.2mm, minimizing waste by 15%. Waterjet’s cold process prevents FH36 hardening, critical for weld prep.
Welding Techniques Welding joins steel components. MIG welds 50mm A36 at 0.8m/min (AWS D1.1), TIG ensures ±0.2 mm on 25mm 316L (ISO 9606-1), and robotic welds 150mm FH36 with 1.2m/min.
| Method | Speed (m/min) | Penetration (mm) | Material Example | Tensile Strength (MPa) | Application |
| MIG Welding | 0.8 | 5-10 | A36 (ASTM A36) | 400 | Piping systems |
| TIG Welding | 0.5 | 3-6 | 316L (ASTM A240) | 550 | Aerospace parts |
| Robotic Welding | 1.2 | 10-15 | FH36 (DNV) | 490-620 | Ship hulls |
Technical Data: Robotic welding reduces porosity to <1%, enhancing FH36 impact strength (27J at -40°C) per ASTM E23.
Heat Treatment Techniques Heat treatment improves steel properties. Normalizing at 900-950°C refines A516 Gr.70 grains, and stress relief at 620-650°C reduces residual stress.
| Method | Temperature (°C) | Duration (hours) | Material Example | Property Improved | Application |
| Normalizing | 900-950 | 1-2 | A516 Gr.70 (A516) | Grain size, toughness | Pressure vessels |
| Stress Relief | 620-650 | 2-3 | A36 (ASTM A36) | Residual stress | Welded structures |
| Quenching | 870-900 | 0.5-1 | 4130 (ASTM A29) | Hardness (300 HB) | Tools, gears |
Technical Data: Normalizing increases A516 Gr.70 yield to 270 MPa, while quenching on 4130 steel achieves 300 HB hardness, per ASTM E10.
Technical FAQ: Material Selection Guide
Application Case: Boiler Plates A516 Gr.70 (ASTM A516) boiler plates, normalized at 925°C, offer 485-620 MPa tensile and 260 MPa yield, ideal for 400°C service. SHH STEEL’s testing confirms 20% fatigue life improvement post-heat treatment.
Application Case: Pressure Vessel Plates P355GH (EN 10028-2) plates, with 490-630 MPa tensile and 34J impact, suit 500°C boilers. Our clad plates (ASTM A264) add corrosion resistance, reducing leaks by 40%.
SHH STEEL’s expertise ensures buyers leverage these techniques for optimal performance.
