ASTM A516 Gr. 60 Gr. 70 Carbon Steel Flanges
ASTM A516 Gr. 60 & Gr. 70 Carbon Steel Flanges | SSM
SSM is a trusted manufacturer and supplier of ASTM A516 Grade 60 and Grade 70 Carbon Steel Flanges, widely used in pressure vessels, boilers, and piping systems where high strength and durability are required. Designed to meet ASME B16.5, B16.47, and ASTM A516 standards, these flanges offer excellent mechanical properties and reliable performance.
1. Product Overview
ASTM A516 carbon steel flanges are made from pressure vessel quality carbon steel plates, suitable for moderate and low-temperature service. They are often used in oil & gas, power generation, and chemical processing industries.
Standard: ASTM A516 / ASME B16.5 / B16.47
Grades: A516 Gr. 60, A516 Gr. 70
Material: Carbon Steel
Size Range: DN15 – DN1200 (½" – 48")
Pressure Rating: Class 150 – Class 2500
Facing Type: RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Type: Weld Neck (WN), Slip-On (SO), Blind (BL), Lap Joint (LJ), Socket Weld (SW)
2. Chemical Composition
| Element | Gr. 60 (%) | Gr. 70 (%) |
|---|---|---|
| Carbon (C) | 0.25 – 0.28 | 0.28 – 0.31 |
| Manganese (Mn) | 0.80 – 1.20 | 0.85 – 1.20 |
| Phosphorus (P) | ≤ 0.035 | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 | ≤ 0.035 |
| Silicon (Si) | 0.20 – 0.35 | 0.20 – 0.35 |
| Copper (Cu) | 0.20 – 0.35 | 0.20 – 0.35 |
3. Mechanical Properties
| Property | Gr. 60 | Gr. 70 |
|---|---|---|
| Tensile Strength | 485 – 620 MPa | 485 – 690 MPa |
| Yield Strength | 260 MPa | 290 MPa |
| Elongation | 21% | 20% |
| Hardness | 197 HB max | 207 HB max |
| Service Temperature | -46°C to 427°C | -46°C to 427°C |
4. Key Features
✅ High Strength: Withstand high pressure and mechanical stress in industrial piping systems.
✅ Excellent Weldability: Suitable for welding without pre-heating in most applications.
✅ Corrosion Resistance: Performs well in low to moderate temperature environments.
✅ Durable Construction: Made from pressure vessel-grade steel plates.
✅ Versatile Design: Available in multiple flange types and facing options for pipeline connections.
5. Advantages and Limitations
Advantages:
Reliable for pressure vessel and boiler applications.
Compatible with carbon steel piping systems.
High durability and long service life.
Limitations:
Not suitable for highly corrosive environments without protective coatings.
Requires proper welding techniques for low-temperature service.
6. Applications
Oil & Gas Pipelines and Refineries
Power Plants and Boilers
Chemical and Petrochemical Plants
Heat Exchangers and Pressure Vessels
Water and Steam Piping Systems
7. Why Choose SSM
Over 30 years of experience manufacturing carbon steel flanges
Certified under ISO 9001 / EN 10204 3.1
Compliance with ASTM A516, ASME B16.5 / B16.47
Advanced forging, CNC machining, and NDT inspection capabilities
Fast global delivery and custom design services
8. Conclusion
The ASTM A516 Gr. 60 and Gr. 70 Carbon Steel Flanges from SSM offer high strength, excellent weldability, and reliable performance for industrial piping, pressure vessels, and boiler systems.
They are the ideal solution for industries requiring durable, high-quality carbon steel flanges.
📩 Contact SSM today for pricing or custom specifications for your ASTM A516 carbon steel flange project.
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