EN 10028-2 P355GH Equivalent ASTM A516 Gr 70

EN 10028-2 P355GH Equivalent ASTM A516 Gr 70

When selecting steel plates for pressure vessels, understanding the equivalence between EN 10028-2 P355GH and ASTM A516 Gr 70 is critical for ensuring compatibility in global projects. Both are high-quality carbon steels designed for welded pressure vessels and boilers, offering excellent strength and toughness in moderate to low-temperature environments.

 As a leading supplier, Gangsteel exports A516 Gr 70 plate and EN 10028-2 compliant P355GH plates, ensuring compliance with international standards. This article compares EN 10028-2 P355GH equivalent ASTM A516 Gr 70, covering chemical composition, mechanical properties, applications, and more to guide engineers and procurement teams in selecting the right material for oil, gas, and petrochemical industries.

1. Overview of EN 10028-2 P355GH and ASTM A516 Gr 70

EN 10028-2 P355GHis a European standard carbon steel for pressure vessels, specified under EN 10028-2 for elevated temperature service, with a minimum yield strength of 355 MPa for thinner plates. It’s widely used in Europe for boilers, storage tanks, and heat exchangers, offering good weldability and toughness.

ASTM A516 Gr 70, part of the ASTM A516 specification, is a carbon steel for pressure vessels in moderate and low-temperature service, with a minimum yield strength of 260 MPa. It’s a staple in North America for similar applications, often enhanced with NACE MR0175 and HIC testing for sour gas environments, as seen in ASTM A516 GR70 equivalent material.

Key Similarity: Both are carbon steels for pressure vessels, with P355GH suited for slightly higher temperatures and A516 Gr 70 optimized for low-temperature toughness.

2. Chemical Composition Comparison

The chemical compositions of P355GH and A516 Gr 70 are closely aligned, supporting their equivalence:

Key Differences:

• Carbon Content: P355GH has a lower carbon maximum (≤ 0.16%) for better weldability, while A516 Gr 70 chemical composition allows up to 0.31% for higher strength in thicker sections.
• Impurity Limits: P355GH has tighter phosphorus (≤ 0.025%) and sulfur (≤ 0.015%) controls, enhancing toughness for elevated temperatures.
• Alloying Elements: P355GH includes minor chromium, nickel, and molybdenum for heat resistance, absent in A516 Gr 70.

The carbon equivalent (CE = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15) for both is low, ensuring good weldability, with A516 Gr 70 slightly higher due to carbon content.

3. Mechanical Properties Comparison

The mechanical properties reflect their suitability for pressure vessel applications:

Key Differences:

• Yield Strength: P355GH has a higher yield (355 MPa vs 260 MPa), making it stronger for thinner plates, while A516 Gr 70 maintains consistent strength across thicknesses.
• Tensile Strength: P355GH’s range (510-650 MPa) is slightly higher, reflecting its design for elevated temperatures, compared to A516 GR 70 mechanical properties of 485-620 MPa.
• Impact Toughness: A516 Gr 70 often undergoes stricter low-temperature impact testing, suiting colder environments, while P355GH is tested at -20°C for moderate conditions.

4. Equivalent Materials

EN 10028-2 P355GH is considered equivalent to ASTM A516 Gr 70 in many applications, but other standards also align:

These EN 10028-2 P355GH equivalent ASTM A516 Gr 70 matches ensure compatibility for global pressure vessel projects.

5. Applications of P355GH and A516 Gr 70

Both steels are used in:

• Oil and Gas: Storage tanks and pipelines, with A516 Gr 70 preferred for pressure vessel steel plate for sour gas environments due to HIC testing.
• Petrochemical: Reactors and heat exchangers.
• Power Generation: Boilers and steam drums.

Key Difference: P355GH is optimized for elevated temperatures (up to 400°C), while A516 Gr 70 excels in low-temperature applications, often with NACE/HIC compliance for sour gas.

6. Specification and Dimensions

Gangsteel offers both in customizable sizes:

These dimensions support A516 GR 70 Plate thickness for various vessel designs.

7. Supply Conditions and Availability

• P355GH: Supplied normalized or as-rolled, with large stock for 7-15 day delivery.
• A516 Gr 70: As-rolled (≤ 40mm) or normalized (> 40mm), with HIC/NACE options. Gangsteel stocks over 10,000 tons for immediate shipment.

Gangsteel offers custom cutting and testing for both, ensuring compliance with EN 10028-2 and ASTM A516.

8. FAQ – Frequently Asked Questions

1. Is EN 10028-2 P355GH equivalent to ASTM A516 Gr 70?

Yes, they are equivalent for pressure vessels, with P355GH suited for higher temperatures and A516 Gr 70 for lower temperatures.

2. What is the chemical composition of ASTM A516 Gr 70?

Higher carbon (≤ 0.31%) than P355GH, per A516 Gr 70 chemical composition.

3. What are the mechanical properties of A516 Gr 70?

Yield of 260 MPa, tensile 485-620 MPa, per A516 GR 70 mechanical properties.

4. What are the equivalent materials for P355GH?

ASTM A516 Gr 70, JIS SPV355, per EN 10028-2 P355GH equivalent ASTM A516 Gr 70.

5. Where can I buy P355GH or A516 Gr 70 plates in China?

Gangsteel, a leading supplier for boiler quality steel plate for oil and gas.

6. What is the price of A516 Gr 70 or P355GH per ton?

Contact Gangsteel for quotes on A516 Gr 70 plate.

9. Why Buy from GANGSTEEL?

Gangsteel offers P355GH and A516 Gr 70 plate with large stock, 7-15 day delivery, and MTC EN 10204 3.1 certification. Explore related grades: ASTM A515, ASTM A537, ASTM A387.