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Help CenterSteel Sheet & Plate & Pressure Vessel Plate，ASME SA516（Gr60/65/70）、SA537、SA387；EN 10028-2（P265GH、P355GH、16Mo3）
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Detailed Product Description of Pressure Vessel Plate
1. Implementation Standards
Domestic Standards
GB/T 713-2023: Steel plates for boilers and pressure vessels, covering carbon steel and low-alloy steel.
GB/T 3531-2019: Low-alloy steel plates for low-temperature pressure vessels.
International Standards
American Standard: ASME SA516 (Gr60/65/70), SA537, SA387
European Standard: EN 10028-2 (P265GH, P355GH, 16Mo3)
2. Main Grades & Materials
Carbon Steel Pressure Vessel Plate (Medium & Low Temperature, Low Pressure)
Q245R: Basic carbon steel with yield strength ≥245MPa. Applied to normal/low-pressure vessels and boiler drums, service temperature ≤350℃.
Low-Alloy High-Strength Pressure Vessel Plate (Medium Temperature, Medium & High Pressure)
Q345R: Most widely used grade with excellent low-temperature impact property at -20℃. Suitable for reaction kettles, storage tanks and heat exchangers, service temperature: -20℃ ~ 450℃.
Q370R / Q420R / Q460R: High-strength grades for high-pressure vessels and thick-wall spherical tanks.
Heat-Resistant Pressure Vessel Plate (High Temperature, Creep Condition)
15CrMoR / 14Cr1MoR / 12Cr2Mo1R: Cr-Mo alloy steel with high-temperature oxidation resistance and creep resistance. Used for hydrogenation reactors and high-temperature steam equipment, service temperature ≤550℃.
Low-Temperature Pressure Vessel Plate
16MnDR / 09MnNiDR: Excellent low-temperature toughness, applied to LNG storage tanks, liquid ammonia containers and low-temperature separators.
Export Common Grades
SA516Gr70(N): Main American standard grade in normalized condition, performance similar to Q345R for export projects.
3. Chemical Composition
Carbon (C): 0.12%~0.20%, balance strength and weldability.
Silicon (Si): 0.15%~0.40%, strengthen matrix and anti-oxidation.
Manganese (Mn): 0.80%~1.70%, grain refinement and improve low-temperature toughness.
Phosphorus & Sulfur (P/S): ≤0.025% with strict control to reduce brittleness and cracking risk.
Alloy Elements: Cr/Mo/Ni added as required to improve heat resistance, low-temperature performance and corrosion resistance.
4. Mechanical Properties (Normalized Condition, Typical Value)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Low-Temperature Impact Energy (-20℃, J) |
|---|---|---|---|---|
| Q245R | ≥245 | 400~520 | ≥25 | ≥34 |
| Q345R | ≥345 | 470~630 | ≥21 | ≥34 |
| 15CrMoR | ≥295 | 450~600 | ≥19 | ≥34 |
| 16MnDR | ≥315 | 490~620 | ≥21 | ≥47 (-40℃) |
5. Specifications & Delivery Condition
Size Specifications
Thickness: 3mm~200mm (Common: 6~100mm)
Width: 1500mm~4000mm
Length: 6000mm~12000mm, customized fixed length available
Delivery Condition
Normalized (N): Most common, uniform grain and stable toughness, suitable for low temperature and thick plate.
Hot Rolled / TMCP: Cost-effective for medium temperature and thin plate.
Normalized & Tempered / Quenched & Tempered: High strength and toughness for high-pressure and thick-wall vessels.
6. Core Characteristics
High strength: Yield strength 245~460MPa, suitable for medium and high pressure working conditions.
Excellent toughness: Low-temperature impact energy ≥34J, prevent brittle fracture.
Good weldability: Low carbon equivalent and low impurity, no preheating required for partial grades.
Wide temperature resistance range: -196℃ (low-temperature steel) ~ 550℃ (heat-resistant steel).
High flaw detection grade: UT Grade Ⅱ and above, no internal lamination or crack.
7. Application Scope
Petrochemical Industry: Reaction kettle, heat exchanger, separator, spherical tank, oil & gas storage tank, hydrogenation reactor.
Power & Energy: Boiler drum, high-pressure turbine cylinder, nuclear pressure vessel, hydropower high-pressure water pipe.
Industrial Gas: LNG storage tank, liquid ammonia / liquid oxygen container, acetylene cylinder.
Food & Pharmaceutical: Fermentation tank, sterile storage tank, anti-corrosion reaction equipment.
8. Quality Control Points
Smelting Process: Electric furnace + LF/VD refining, high purity and low impurities.
Heat Treatment: Strict temperature control to ensure stable mechanical properties.
Non-Destructive Testing: 100% ultrasonic testing, MT/PT surface inspection on demand.
Surface Quality: No crack, scar and heavy oxide scale, neat edge cutting.
9. Selection Suggestion
Medium temperature & medium-high pressure: Prefer Q345R Normalized
High temperature & creep working condition: Choose 15CrMoR / 12Cr2Mo1R
Low temperature (-40℃~-196℃): Choose 16MnDR / 09MnNiDR
American standard export project: Choose SA516Gr70N
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