🟪 Product Overview

High‑Strength Pressure Vessel Steel Plate is designed for high‑pressure and heavy‑load applications, where standard pressure vessel steels cannot provide sufficient strength or structural stability.

These steels offer:

• High yield and tensile strength
• Excellent impact toughness
• Superior weldability for thick‑wall fabrication
• Stable performance under high pressure and temperature
• Enhanced resistance to fatigue and stress‑related failures

They are widely used in high‑pressure reactors, industrial pressure vessels, petrochemical equipment, and heavy‑duty boiler systems.

🟪 Product Specifications

• Thickness: 6 – 200 mm
• Width: 1500 – 3000 mm
• Length: Custom lengths available
• Delivery Conditions:
  • Normalized
  • Quenched & Tempered
  • Thermo‑Mechanically Rolled
  • UT Testing (A/B/C/D) available

🟪 Key Features

• High yield and tensile strength for high‑pressure applications
• Excellent toughness for thick‑wall and heavy‑duty vessels
• Good weldability and formability
• Stable performance under high‑pressure and high‑temperature conditions
• Suitable for large reactors, separators, and industrial pressure systems

🟪 Included Grades

ASTM / ASME

• A537 (Class 1 / 2 / 3) — High‑strength, impact‑tested pressure vessel steel
• A202 (Grade A / B) — High‑strength alloy pressure vessel steel

EN 10028

• P460N / P460NH / P460NL1 / P460NL2 — High‑strength EN pressure vessel steel

GB / Chinese Standard

• Q370R — High‑strength pressure vessel steel for heavy‑duty applications

🟪 Mechanical Properties (Typical)

Grade	Yield Strength	Tensile Strength	Impact Toughness	Notes
A537 Cl 1	≥345 MPa	485–620 MPa	≥27 J	High‑strength PV steel
A537 Cl 2	≥415 MPa	550–690 MPa	≥27 J	Higher strength, Q&T
A202 Gr B	≥345 MPa	485–620 MPa	≥27 J	Alloy high‑strength steel
P460NL2	≥460 MPa	550–720 MPa	≥27 J	EN high‑strength PV steel
Q370R	≥370 MPa	510–650 MPa	≥27 J	GB high‑strength PV steel

🟪 Chemical Composition (Typical)

Grade	C (%)	Mn (%)	Si (%)	Cr (%)	Mo (%)	Notes
A537 Cl 1	≤0.24	0.70–1.60	≤0.50	—	—	High‑strength PV steel
A537 Cl 2	≤0.20	1.00–1.60	≤0.50	—	—	Q&T high‑strength steel
A202 Gr B	≤0.23	0.70–1.60	≤0.50	—	—	Alloy high‑strength steel
P460NL2	≤0.20	1.00–1.70	≤0.50	—	—	EN high‑strength PV steel
Q370R	≤0.20	≤1.70	≤0.50	—	—	GB high‑strength PV steel

🟪 Physical Properties (General)

• Density: ~7.85 g/cm³
• Modulus of Elasticity: ~210 GPa
• Thermal Expansion Coefficient: ~11–13 × 10⁻⁶ /K
• Thermal Conductivity: ~40–50 W/(m·K)
• High‑Pressure Fatigue Resistance: Excellent

🟪 Applications

• High‑pressure reactors
• Thick‑wall pressure vessels
• Petrochemical separators
• Industrial boilers
• High‑pressure storage tanks
• Heavy‑duty pressure systems

🟪 Why Use It

High‑strength pressure vessel steels are essential for equipment operating under high pressure, heavy load, or thick‑wall construction, where standard pressure vessel steels cannot meet structural or safety requirements.

They provide:

• Higher load‑bearing capacity
• Improved safety margins
• Better performance under pressure cycling
• Compliance with high‑pressure design codes

🟪 Why Choose Jaron Steel

• Full range of high‑strength pressure vessel steel grades
• Expertise in Q&T, alloy, and high‑pressure steels
• Precision cutting, beveling, rolling, and heavy‑plate processing
• Third‑party inspection available (SGS / BV / TUV)
• Export‑grade seaworthy packaging and stable global supply