OEM customized, Cut by drawings
EMERSONMETAL
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Our production service bridges certified material procurement with equipment-grade fabrication precision. Every plate is sourced to full ASTM A240 compliance with complete heat documentation, then processed through nitrogen-assisted fiber laser cutting to produce blanks and components that integrate directly into pumps, valves, heat exchangers, pressure vessels, and process skids without secondary rework.
| Parameter | Details |
| Material Specification | ASTM A240 / A240M, Type 316 (UNS S31600) |
| Thickness Range | 1.0mm – 50mm (laser cutting) |
| Max Cutting Format | 6,000mm × 2,500mm |
| Cutting Tolerance | ±0.05mm – ±0.10mm (standard); ±0.03mm (precision mode) |
| Surface Condition | No.1 / 2B / 2D / No.4 / Pickled / Passivated |
ASTM A240 TP316 Grade Chemical Composition and Technical Property is as below：
Standard | C % max | Si max | Mn max | P max | S max | Cr Max | Mo Max | tensile strength（MPa） | yield strength（MPa） | Elongation% |
tp316 | 0.08 | 1 | 2 | 0.035 | 0.03 | 16-18.5 | 10-14 | ≥520 | ≥205 | ≥40 |
Q: What is the difference between ASTM A240 TP316 and ASTM A240 316L?
A: TP316 (UNS S31600) contains 0.08% maximum carbon, while 316L (UNS S31603) contains 0.03% maximum carbon. The lower carbon in 316L minimizes sensitization and carbide precipitation during welding, making it preferred for heavy welded equipment or service in the 450–850°C sensitization range. For laser-cut parts that will be lightly welded or used in thinner sections, TP316 is often sufficient and slightly stronger. We stock both grades and can advise based on your welding and service conditions.
Q: Why is the ASTM A240 specification important for equipment parts versus general sheet metal?
A: ASTM A240 establishes strict requirements for chemical composition, mechanical properties, annealing practice, and surface finish that are referenced by pressure equipment codes (ASME Section VIII) and process piping standards. Equipment subject to jurisdictional inspection, insurance review, or safety certification must use A240-certified material. General commercial-grade stainless sheet may not carry the full documentation or meet the chemistry tolerances required for coded equipment.
Q: Does laser cutting TP316 plate affect its corrosion resistance for chemical equipment?
A: When cut with high-purity nitrogen assist and optimized parameters, the heat-affected zone (HAZ) is minimal and the chromium oxide layer is largely preserved. However, for aggressive chemical service or U-stamped pressure vessels, we recommend post-cut passivation (nitric or citric acid) to restore maximum corrosion resistance at the cut edge and remove any microscopic free-iron contamination from handling.
Q: Can you supply TP316 laser-cut parts with machined seal surfaces or gasket grooves?
A: Yes. While laser cutting handles the profile and bolt patterns efficiently, we perform post-laser CNC machining of sealing surfaces, O-ring grooves, and counterbores to the tight tolerances required for ASME flange ratings or API equipment standards. This hybrid laser-plus-machine approach is cost-effective for complex equipment components.
Q: Is TP316 magnetic, and will it affect process instrumentation or welding?
A: Annealed TP316 is essentially non-magnetic (relative permeability <1.05). This is advantageous for equipment near magnetic flow meters, inductive sensors, and MRI-adjacent process rooms. It also means that magnetic particle inspection (MT) cannot be used on the base metal—dye penetrant (PT) or ultrasonic (UT) inspection is employed instead. Cold working during forming can induce minor magnetism, which can be reversed by solution annealing if required.
