Product Introduction
A516 Gr70 Boiler Steel Plate is a carbon structural steel plate manufactured in accordance with ASTM A516/A516M standard. It is specifically designed for use in boilers and pressure vessels operating at medium and low pressures (≤5.2MPa) and temperatures up to 450°C.
With its low carbon content, this grade offers excellent weldability, good cold formability, and stable fatigue resistance - making it the most widely used base material for boiler drums, water walls, and other critical pressure components. Compared to Cr-Mo low-alloy steels, it provides a cost-effective solution, reducing raw material costs by 20–30% while still meeting key mechanical property requirements.
Suitable Applications & Operating Environment
One-stop steel procurement
Typical Applications
Medium & low pressure boiler drums
Water walls and headers
Pressure vessels (e.g., storage tanks, separators)
Boiler auxiliary components (when lower pressure/temperature).
Operating Environment
Pressure: ≤5.2 MPa
Temperature: ≤450°C
Suitable for cyclic operation (startup – shutdown) due to uniform microstructure and reduced stress concentration.
Why A516 Gr70 fits these environments
Stable fatigue resistance → longer life under repeated heating/cooling
Excellent weldability → avoids hot/cold cracks and porosity during fabrication
Clear code compliance → meets ASME BPVC, GB/T 150, and other international pressure vessel standards.
Key Specifications & Tolerances
| Parameter | Value / Range |
|---|---|
| Standard | ASTM A516 / A516M |
| Grade | Gr70 (Grade 70) |
| Type | Boiler Quality Steel Plate |
| Technique | Hot Rolled |
| Thickness | 6 mm – 300 mm |
| Width | 1500 mm – 4050 mm |
| Length | 3000 mm – 15000 mm |
| Yield Strength (min.) | 290 MPa |
| Tensile Strength | 485 – 620 MPa |
| Chemical Composition | Low carbon (≤0.30%), Mn, P, S controlled |
| Certifications | ISO, SGS; Factory test certificate / Third-party inspection available |
why choose us?
Certified quality – ISO, SGS, Alibaba verified
Full traceability – Mill test certificates + optional third-party inspection
Flexible supply – Multiple sizes in stock; custom lengths/widths available
Global shipping – Exported to USA, Russia, UK, Kuwait, Egypt, Turkey, Jordan, India, and more
Competitive pricing – Lower than many Cr-Mo steels without sacrificing performance
Get the quotation within 24 hours
one-stop solution
professional team
high quality
our Partners
We trusted by
Mr. Chen Wei
Project Manager, Pressure Vessel Fabricator, Egypt
Ms. Nguyen Thi Hong
Procurement Lead, Boiler Manufacturer, Turkey
Mr. Rajesh Kumar
Quality Supervisor, Engineering Company, India
FAQ
01.What are the available dimensions for A516 Gr70 boiler steel plate?
We supply A516 Gr70 plates in thicknesses from 6mm to 300mm, widths from 1500mm to 4050mm, and lengths from 3000mm to 15000mm. Custom sizes are available upon request.
02.What standard does A516 Gr70 comply with?
03.Is A516 Gr70 suitable for high-temperature or high-pressure boilers?
04.How does A516 Gr70 compare to Chinese grade Q245R or European S235JR?
A516 Gr70 (ASTM) – For medium/low pressure boilers & pressure vessels (USA standard).
Q245R (GB) – Standard material for low/medium pressure boilers in China, good toughness and cold formability.
S235JR/S275JR (EN) – Suitable for lower-pressure auxiliary components (ducts, headers).
All are carbon structural steels, but A516 Gr70 is preferred for ASME BPVC certified projects.
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