Hunan Dinghan New Material Technology Co., LTD
| Tube Type | Cold Drawn Seamless |
| Melting Range | 1311-1366°C |
| Delivery Time | (Sample Order) 7 days |
| Density | 8.08 g/cm³ |
| Packaging Details | According to Customers' Requests |
| Tensile Strength | ≥ 965 MPa (Age Hardened) |
| Application | Sour Gas Downhole Tubing, Oilfield Piping |
| Outer Diameter Range | 6mm - 219mm |
| Length | Up to 12000mm |
| Yield Strength | ≥ 758 MPa (0.2% Offset) |
| Payment Terms | T/T |
| Wall Thickness Range | 1mm - 30mm |
| Hardness | 26-38 HRC |
| Alloy Grade | Incoloy 925 (UNS N09925) |
| Supply Ability | Negotiable |
| Brand Name | DINGSCO |
| Model Number | Incoloy 925 |
| Certification | ISO 9001:2015, PED2014/68/EC, API6A |
| Place of Origin | China |
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Product Specification
| Tube Type | Cold Drawn Seamless | Melting Range | 1311-1366°C |
| Delivery Time | (Sample Order) 7 days | Density | 8.08 g/cm³ |
| Packaging Details | According to Customers' Requests | Tensile Strength | ≥ 965 MPa (Age Hardened) |
| Application | Sour Gas Downhole Tubing, Oilfield Piping | Outer Diameter Range | 6mm - 219mm |
| Length | Up to 12000mm | Yield Strength | ≥ 758 MPa (0.2% Offset) |
| Payment Terms | T/T | Wall Thickness Range | 1mm - 30mm |
| Hardness | 26-38 HRC | Alloy Grade | Incoloy 925 (UNS N09925) |
| Supply Ability | Negotiable | Brand Name | DINGSCO |
| Model Number | Incoloy 925 | Certification | ISO 9001:2015, PED2014/68/EC, API6A |
| Place of Origin | China | ||
| High Light | UNS N09925 Alloy Seamless Tube ，Cold Drawn Nickel Alloy Pipe ，Sour Service Downhole Tubing | ||
| Alloy Grade | Incoloy 925 (UNS N09925) |
| Product Form | Cold Drawn Seamless Tube / Round Pipe |
| Outer Diameter Range | 6 mm - 219 mm |
| Wall Thickness Range | 1 mm - 30 mm |
| Length | Up to 12,000 mm (Custom lengths available) |
| Manufacturing Standard | ASTM B163, ASTM B829, NACE MR0175 |
| Heat Treatment | Solution Annealed + Age Hardened |
| Density | 8.08 g/cm³ |
| Melting Range | 1311 - 1366°C |
Incoloy 925 (UNS N09925) is an age-hardenable nickel-iron-chromium alloy with additions of molybdenum, copper, titanium, and aluminum. The alloy's chemical composition is designed to provide a combination of high strength and excellent corrosion resistance. The nickel content (42-46%) is sufficient for protection against chloride-ion stress-corrosion cracking. The nickel, in conjunction with the molybdenum and copper, also gives outstanding resistance to reducing chemicals. The molybdenum aids resistance to pitting and crevice corrosion. The chromium content provides resistance to oxidizing environments. The titanium and aluminum additions cause a strengthening reaction during heat treatment. Incoloy 925 exhibits exceptional resistance to sulfide stress cracking and stress-corrosion cracking in sulfide-containing (sour) environments, making it an ideal material for oil and gas production equipment.
| Element | Ni | Cr | Fe | Mo | Cu | Ti | Al | Mn | Si | C | S |
| Content (%) | 42.0 - 46.0 | 19.5 - 22.5 | ≥ 22.0 | 2.5 - 3.5 | 1.5 - 3.0 | 1.9 - 2.4 | 0.1 - 0.5 | ≤ 1.0 | ≤ 0.5 | ≤ 0.03 | ≤ 0.03 |
| Property | Value |
| Density | 8.08 g/cm³ (0.292 lb/in³) |
| Melting Range | 1311 - 1366°C (2392 - 2490°F) |
| Electrical Resistivity | 1.17 µΩ·m |
| Permeability at 200 Oersteds (15.9 kA/m) | 1.001 |
| Thermal Conductivity | 10.9 W/m·K at 20°C |
| Specific Heat | 435 J/kg·K |
| Property | Cold Worked | Cold Worked + Aged | Hot Worked |
| Tensile Strength (min) | 965 MPa (140 ksi) | ≥ 1214 MPa (176 ksi) | 965 MPa (140 ksi) |
| Yield Strength 0.2% Offset (min) | 724 MPa (105 ksi) | ≥ 830 MPa (120 ksi) | 758 MPa (110 ksi) |
| Elongation (min 4D) | ≥ 15% | ≥ 13% | ≥ 15% |
| Reduction of Area (min) | ≥ 35% | ≥ 30% | ≥ 35% |
| Hardness | 26 - 38 HRC | 35 - 46 HRC | 26 - 38 HRC |
| Impact Strength (avg at -60°C) | ≥ 35 ft·lb | ≥ 30 ft·lb | ≥ 35 ft·lb |
| Alloy | UNS | CPT (°C) in 10% FeCl₃ | CCT (°C) in 6% FeCl₃ | Sulfide Stress Cracking (NACE MR0175) |
| Incoloy 925 | N09925 | ≥ 50 | ≥ 35 | Pass (No Cracking) |
| Incoloy 825 | N08825 | 30 - 35 | 15 - 20 | Conditional |
| Inconel 718 | N07718 | 25 - 30 | 15 - 20 | Pass |
| Inconel 625 | N06625 | ≥ 85 | ≥ 65 | Pass |
| 316L Stainless | S31603 | 10 - 15 | ≤ 5 | Not Recommended |
CPT = Critical Pitting Temperature, CCT = Critical Crevice Temperature. Tests per ASTM G48.
| Product Form | Specification / Standard |
| Seamless Round Tube | OD 6 - 219 mm * WT 1 - 30 mm, ASTM B163 / B829 |
| Cold Drawn Tubing | Precision OD/ID tolerances, solution-annealed + aged |
| Round Bars | Dia 6 - 300 mm, hot rolled / forged + aged |
| Custom Machined Components | Per customer drawings and specifications |
DINGSCO is a premier manufacturer and supplier of high-performance nickel alloy products, serving global industries including oil & gas, petrochemical, marine engineering, and power generation. With decades of metallurgical expertise, we deliver precision-engineered nickel alloy tubing, fasteners, flanges, and custom components that meet the most demanding international standards.
QUALITY ASSURANCE: Our mission is to provide our customers only with the best quality products. As an ISO 9001:2015, PED 2014/68/EC, and API 6A certified manufacturer, we implement strict Quality Control at every production stage — from raw material inspection and in-process testing to final dimensional and NDE verification.
SCIENCE AND TECHNOLOGY INNOVATION STRATEGY: We pay close attention to customer needs, implement product innovation, and further leverage the company's full range of product types and material grades to provide customers with one-stop service. Continuous improvement drives our material, process, and equipment optimization programs.
COOPERATION: We are pleased to help others and glad to accept the hand of others. We actively participate in team collaboration and support decision-making. We share our experience with each other and excel at cooperating with different types of colleagues and partners worldwide.
DINGSCO offers a comprehensive range of nickel alloys for demanding environments. If Incoloy 925 does not fully meet your specific requirements, we also supply:
| Alloy | UNS | Key Feature | Typical Application |
| Incoloy 825 | N08825 | General corrosion resistance | Chemical processing, acid handling |
| Inconel 718 | N07718 | Ultra-high strength up to 650°C | Aerospace, gas turbine components |
| Inconel 625 | N06625 | Superior pitting/crevice resistance | Seawater, flue gas desulfurization |
| Inconel 725 | N07725 | High strength + H₂S resistance | Sour service downhole equipment |
| Monel K-500 | N05500 | Seawater corrosion + high strength | Marine shafts, pump components |
| Hastelloy C-276 | N10276 | Broad chemical resistance | Severe chemical environments |
DINGSCO provides fully customized nickel alloy solutions tailored to your exact specifications:
| Term | Details |
| Minimum Order Quantity | Negotiable |
| Price | Negotiable |
| Packaging Details | According to Customers' Requests |
| Delivery Time | (Sample Order) 7 days |
| Payment Terms | T/T |
| Supply Ability | Negotiable |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1998
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications. We have complete advanced technology facilities t... Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications. We have complete advanced technology facilities t...
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