Hunan Dinghan New Material Technology Co., LTD
| Payment Terms | T/T |
| Supply Ability | Negotiable |
| Delivery Time | (Sample Order) 7 days |
| Packaging Details | According to Customers' Requests |
| Product Name | Nickel Alloy Flat Welding Flange |
| Grade | Super Dupex F44 |
| Density | 8.0g/cm3 |
| 0.2% Proof Strength | 300 MPa |
| Ultimate Tensile Strength | 650 – 850 MPa |
| Hardness (Max) | 260 HB |
| Elongation | 35 % |
| Impact | 100 J |
| Tensile Strength, Yield | 245 MPa |
| Thermal Conductivity at 20°C | 14W.m-1.K-1 |
| Mean Coefficient of Thermal Expansion at 20 - 100°C | 16.5x 10-6 K -1 |
| Electrical Resistivity at 20°C | 0.85Ω .mm2 .m-1 |
| Modulus of Elasticity at 20° | 195GPa |
| Specific Heat | 500J/kg.℃ |
| Brand Name | DINGSCO |
| Model Number | According to customers requirements |
| Certification | ISO 9001:2015,PED 2014/68/EU,API 6A,API-20B,TSG,NORSOK |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | Negotiable |
| Delivery Time | (Sample Order) 7 days | Packaging Details | According to Customers' Requests |
| Product Name | Nickel Alloy Flat Welding Flange | Grade | Super Dupex F44 |
| Density | 8.0g/cm3 | 0.2% Proof Strength | 300 MPa |
| Ultimate Tensile Strength | 650 – 850 MPa | Hardness (Max) | 260 HB |
| Elongation | 35 % | Impact | 100 J |
| Tensile Strength, Yield | 245 MPa | Thermal Conductivity at 20°C | 14W.m-1.K-1 |
| Mean Coefficient of Thermal Expansion at 20 - 100°C | 16.5x 10-6 K -1 | Electrical Resistivity at 20°C | 0.85Ω .mm2 .m-1 |
| Modulus of Elasticity at 20° | 195GPa | Specific Heat | 500J/kg.℃ |
| Brand Name | DINGSCO | Model Number | According to customers requirements |
| Certification | ISO 9001:2015,PED 2014/68/EU,API 6A,API-20B,TSG,NORSOK | Place of Origin | China |
| High Light | 8.0g/Cm3 Flat Welding Flange ，Super Dupex F44 Flat Welding Flange ，Nickel Alloy Flat Welding Flange | ||
Nickel Alloy Stem 254 SMO 6MO Super Dupex F44 1.4547 UNS S31254
Nickel Alloy Valve Stem is not only a moving part and a load-bearing component during the valve opening and closing process, but also a sealing element. It is subjected to the impact and corrosion of the medium, as well as friction with the packing. Therefore, when selecting the valve stem material, it is necessary to ensure that it has sufficient strength, good impact toughness, anti-scoring properties, and corrosion resistance at the specified temperature. The valve stem is a wearing part, and attention should also be paid to the material’s machinability and heat treatment properties when selecting it.
The forms of valve stem packing are as follows:
UNS S31254 / 1.4547 / F44:
Chemical Composition:
| Element | C | Mn | Si | S | P | Cr | Ni | Mo | N | Cu |
| Minimum(%) | - | - | - | - | - | 19.5 | 17.5 | 6 | 0.18 | 0.5 |
| Max(%) | 0.02 | 1 | 0.7 | 0.01 | 0.03 | 20.5 | 18.5 | 7 | 0.25 | 1 |
| ASTM | S31254 / A182 / A276 / A479 / A240 / A312 / A312 |
| ASME | S31254 / SA182 / SA276 / SA479 / SA240 / SA312 / SA312 |
| Machinability | 1. Stainless steel grade 254 SMO™ is quite tough to machine due to the extremely high work hardening rate and lack of sulfur content; 2. however using sharp tools, overpowered machine tools, positive feeds, good amount of lubrication, and slow speeds tend to provide good machining results. |
| Welding | 1. Welding of stainless steel grade 254 SMO™ requires filler material without which it results in poor strength properties. 2. Filler metals such as AWS A5.14 ERNiCrMo-3, and alloy 625 are recommended. 3. Electrodes used in the process, have to match with AWS A5.11 ENiCrMo-12. |
| Annealing | Annealing of this material should be performed at 1149-1204°C (2100-2200°F), which should be followed by a water quench. |
| Hot Working | 1. Forging, upsetting and other operations relating to this material can be performed at 982 – 1149°C (1800 – 2100°F). 2. It is recommended that temperatures do not exceed this range as it would result in scaling and reduction in the workability of the material. 3. To re-attain maximum corrosion resistant properties, it is advisable to perform post-process annealing. |
| Cold Working | 1. Cold working can be carried out using all the traditional methods; 2. however the process would be tough due to its high work hardening rate. 3. The result will provide the material with increased strength and toughness. |
| Hardening | 1. Stainless steel grade 254 SMO™ does not respond to heat treatment. 2. Hardening is possible only through cold reduction. |
Processing Flow Chart:
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 to produc... 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 to produc...
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