Pressure Vessel Steel Plate

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional pressure vessel steel plate manufacturers and suppliers in China. Welcome to wholesale customized pressure vessel steel plate at competitive price from our factory. Good service and quality products are available.

What is Pressure Vessel Steel Plate or Boiler Steel Plate?

Pressure vessel steel plate,also called Boiler Steel Plate, Pressure Vessel Shell Plate,Carbon steel pressure vessel steel plate,Chrome Moly Steel Plate,Pressure Vessel (PVQ) Steel Plate is a range of material grades designed specifically for use in pressure vessels containing gases or liquids at high pressure.Pressure vessel steel plate covers carbon steel and alloy steel grades, which are designed for use in making pressure vessels, boilers, heat exchangers and any other vessels and tanks that to store liquid or gas at high pressures.

Pressure Vessel Steel Plate/Shell Plate Grades

Pressure Vessel Steel provides premium quality carbon steel plate for boiler and pressure vessel fabrication which is perfectly suited to the high standards set by the oil, gas, and petrochemical equipment, GNEE stocks a wide range of dimensions of ASTM A516 GR70, A283 Grade C, ASTM A537 CL1/CL2.

Low Alloy Pressure Vessel Grades

With adding alloy elements like chromium, molybdenum, or nickel will increase steel heat and corrosion resistances. These plates also known as Chrome Moly Steel Plates.

ASTM A387 Crade11, 22 Steel Plate

Chromium-Molybedenum Alloy Steel Plate

The material grades that between pure carbon steel pressure vessel grades and stainless steel plates. Typically standards is ASTM A387, 16Mo3 these steels have improved corrosion and temperature resistance over the standard carbon steels but without the cost of stainless steels (due to their lower nickel and chromium content).

Types Of Pressure Vessel Steel Plate

1.Carbon Steel Pressure Vessel Plates

Standard Characteristics: Suitable for low to medium temperature pressure vessels, without the need for complex alloy additions, ensuring high cost-effectiveness.

ASTM A283 (General Low to Medium Strength Pressure Vessel Carbon Steel)

Grades A/B/C/D (Increasing Strength Levels)

ASTM A285 (Low to Medium Temperature Pressure Vessel Carbon Steel)

Grade C (Typically Used for Storage Tanks)

ASTM A516 (Carbon Steel Optimized for Low-Temperature Toughness)

Grades 55/60/65/70 (Impact Performance at -45°C)

ASTM A515 (High-Temperature Pressure Vessel Carbon Steel, for ≤650°F/343°C)

Grades 60/65/70

2.Heat-Treated Carbon-Manganese Steel (For Pressure Vessels)

Characteristics: Strength enhanced through normalization or quenching and tempering, suitable for heavy-duty pressure vessels.

ASTM A537 (Heat-Treated Carbon-Manganese Steel)

Class 1 (Normalized)

Class 2 (Normalized + Tempered)

3.Low-Alloy High-Strength Structural Steel

Applications: Construction, bridges, and mechanical structures, balancing strength and weldability.

ASTM A572 (Niobium-Vanadium Micro-Alloyed High-Strength Steel)

Grades 42/50/60/65 (Minimum Yield Strength 290-450 MPa)

ASTM A737 (Low-Alloy High-Strength Pressure Vessel Steel)

Grades B/C (Optimized for Low-Temperature Impact Performance)

4.Chromium-Molybdenum Alloy Steel (For High-Temperature and High-Pressure Environments)

Characteristics: Cr-Mo elements provide resistance to high-temperature creep and hydrogen corrosion, ideal for petrochemical reactors.

ASTM A387 (Chromium-Molybdenum Alloy Pressure Vessel Steel)

Grade 11 (1.25Cr-0.5Mo)

Grade 22 (2.25Cr-1Mo)

5.Stainless Steel pressure vessel steel plate

304/304L Stainless SteelPlate, Sheet
316/316L Stainless SteelPlate, Sheet

ASTM A515 vs. A516:

A515: Suitable for high-temperature applications (≤343°C) but with lower low-temperature toughness.

A516: Optimized for low-temperature impact toughness (-45°C), used in LNG storage tanks and similar applications.

Major Categories of Pressure Vessel Plates

1. Carbon Steel Pressure Vessel Grades

Standards: ASTM A516, A283, A537, EN 10028-2 P275GH
Typical Composition:
| Element | C ≤0.25% | Mn ≤1.20% | Si ≤0.35% | P ≤0.025% | S ≤0.025% |
Key Applications:

Firewater storage tanks (A516 Gr60)

Compressed air receivers (A283 Grade C)

LPG bullet tanks (A537 Class 1)

Advantages:
✅ Cost-effective for non-corrosive media
✅ 50% faster fabrication vs alloy steels
✅ Available up to 300mm thickness

2. Low Alloy Pressure Vessel Grades (Cr-Mo Steels)

Standards: ASTM A387 Gr11/22, EN 10028-2 13CrMo4-5
Alloy Additions:

1.25%Cr-0.5%Mo (Grade 11)

2.25%Cr-1%Mo (Grade 22)

Critical Properties:

Creep resistance up to 550°C

H₂S resistance (HRC ≤22 hardness)

Post-weld heat treatment mandatory

Industrial Uses:
▶️ Hydrocracker reactors (A387 Gr11)
▶️ Steam methane reformers (A387 Gr22)
▶️ Geothermal energy systems

3. Stainless Steel Pressure Vessel Grades

Material Types:

Austenitic: 304L, 316Ti (ASME SA-240)

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