Hunan Dinghan New Material Technology Co., LTD
A professional manufacturer of high-temperature alloy accessories and corrosion-resistant alloy accessories for high-end valves
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The API 6A CRA / UNS N07718 Nickel Alloy Forging is a high-strength, corrosion-resistant component designed for extreme service conditions in oil, gas, and energy industries. Manufactured from Nickel Alloy 718 (UNS N07718), these forgings combine outstanding mechanical strength, fatigue resistance, and excellent stress-corrosion cracking resistance. Strictly produced to API 6A standards, they ensure reliable performance in demanding subsea and high-pressure environments.
API 6A Compliance – Engineered and tested to meet the stringent requirements of the oil & gas industry.
Corrosion-Resistant Alloy (CRA) – Exceptional resistance against sulfide stress cracking, chloride attack, and sour gas environments.
Superior Mechanical Strength – Maintains tensile and yield strength even at elevated temperatures.
Excellent Fatigue Resistance – Long-lasting durability under cyclic loading and extreme pressure conditions.
Custom Forging Capability – Available in various forged shapes, including blocks, discs, shafts, and rings.
| Specification | Details |
|---|---|
| Material Grade | Nickel Alloy 718 (UNS N07718 / Inconel 718 / W.Nr. 2.4668) |
| Standard | API 6A, NACE MR0175 / ISO 15156 |
| Form | Forgings – rings, blocks, shafts, flanges, and custom shapes |
| Density | 8.19 g/cm³ |
| Melting Range | 1260–1336 °C (2300–2440 °F) |
| Tensile Strength | ≥ 1240 MPa |
| Yield Strength | ≥ 1030 MPa |
| Elongation | ≥ 12% |
| Hardness | ≤ 44 HRC (as per API 6A requirements) |
| Condition | Solution annealed and age-hardened (precipitation strengthened) |
| Certificates | API 6A, EN 10204 3.1 / 3.2, full traceability |
Oil & Gas Exploration – Forged components for wellhead equipment, subsea systems, and offshore platforms.
High-Pressure Valves & Fittings – API 6A compliant parts designed for sour service and corrosive environments.
Drilling & Completion Tools – Forgings for packers, hangers, and downhole tools requiring CRA materials.
Power Generation – High-strength forgings for turbine components and steam systems.
Aerospace & Defense – Nickel alloy forgings used in jet engines, landing gear, and structural components.
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