A516Gr70+316L Clad steel plate Chemical Composition and Mechanical Property
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ASTM A516 Grade 70 Chemical Composition |
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|
Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
|
|
ASTM A516 grade 70 |
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|
Thick <12.5mm |
0.27 max |
0.15–0.40 |
0.85–1.20 |
0.035 |
0.035 |
|
Thick12.5-50mm |
0.27 max |
0.15–0.40 |
0.85–1.20 |
0.035 |
0.035 |
|
Thick50-100mm |
0.27 max |
0.15–0.40 |
0.85–1.20 |
0.035 |
0.035 |
|
Thick100-200mm |
0.27 max |
0.15–0.40 |
0.85–1.20 |
0.035 |
0.035 |
|
Thick>200mm |
0.27 max |
0.15–0.40 |
0.85–1.20 |
0.035 |
0.035 |
|
Element |
Percentage (%) |
|
Carbon (C) |
0.27 max |
|
Manganese (Mn) |
0.85–1.20 |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Silicon (Si) |
0.15–0.40 |
|
Nickel (Ni) |
0.40 max (optional) |
|
Chromium (Cr) |
0.30 max (optional) |
|
Molybdenum (Mo) |
0.08 max (optional) |
|
Grade |
ASTM A516 Grade 70 Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
|
|
ASTM A516 grade 70 |
mm |
Min Mpa |
Mpa |
Min % |
|
6-40 |
260 |
485-620 |
21% |
|
|
40-100 |
260 |
485-620 |
17% |
|
| Grade |
C
|
Mn |
P
|
S
|
Si |
Cr |
Ni | Mo | Ni |
Cooper
|
| 316L(S31603) | 0.030 | 2.0 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | 0.10 | - |
| Grade |
Yield strength (N/mm2), min |
Tensile strength (N/mm2), min |
Elongation in 2 in. (50mm), %, min |
|
Cold bend | ||||||
|
Austenitic (Chromium-Nickel) (Chromium-Manganese-Nickel) |
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| 316L(S31603) |
|
|
40 |
|
not required | ||||||
A516Gr70+316L Clad steel plate Application
Chemical Industry:
Acid Storage Tanks: Resist 5–20% sulfuric acid and chloride-laden wastewater.
Reactors: Handle organic synthesis under high pressure and temperature.
Oil and Gas:
Hydrocracking Units: A516Gr70 provides structural integrity, while 316L resists H₂S and chloride corrosion.
Subsea Pipelines: Withstand seawater and high-pressure hydrocarbon fluids.
Marine Engineering:
Desalination Plants: Resist brackish water and chlorine-based disinfectants.
Shipboard Tanks: Store fuel or seawater with minimal corrosion .
Food and Pharmaceuticals:
Processing Equipment: Meet FDA standards for hygiene (Ra ≤1.6μm) and resist cleaning agents.
A516Gr70+316L Clad steel plate Other Name
A516Gr70+316L Clad steel plate, A516Gr70 steel plate, 316L steel plate
Technological Innovations Under Special Working Conditions
Welding in Low-Temperature Environments
When the ambient temperature is <0°C, additional preheating to 200–250°C is required, and the "multi-layer and multi-pass welding" method should be adopted, with the interpass temperature maintained at 150–200°C.
Post-heating (250–300°C, holding for 1 hour) should be performed immediately after welding to accelerate hydrogen diffusion.
Protection Against Highly Corrosive Media
Transition Layer Upgrade: In environments with Cl⁻ concentration >1000ppm, it is recommended to use ER NiCrMo-3 (Inconel 625) for the transition layer, which contains 9–10% Mo and has a Pitting Resistance Equivalent Number (PREN) ≥40.
Surface Coating: After welding, the surface of the cladding layer is sprayed with an epoxy resin/alumina composite coating (thickness 150–200μm). The corrosion resistance time in the salt spray test (ASTM B117) exceeds 5000 hours.
For sanitary pressure vessels in pharmaceutical/food industries (e.g., sterile drug storage tanks, dairy processing equipment), we provide Q345B+304L Clad steel or Q235B+304 Clad steel that meets TSG 21 and food-grade standards. If you need to know surface roughness requirements, weldability with sanitary fittings, or calculate processing costs for customized inner cavities, send an inquiry for professional consultation and certification documents.
Email: alloy@gneesteelgroup.com
Whatsapp (WeChat): +86 15824687445
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