Zhengzhou Huitong Pipeline Equipment Co.,Ltd.
| Payment Terms | L/C,T/T, Western Union |
| Supply Ability | 1000 pcs per month |
| Delivery Time | 30-35 working days |
| Packaging Details | wooden case, wooden pallet |
| Product Type | bolt nut washer |
| Name | Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners |
| Size | M6-M100 |
| Finish | Cold galvanizing, Hot-dip Galvanizing, PTFE, Zinc Nickel, Black coating, Plain |
| Standard | DIN931 DIN933 DIN912 DIN934 DIN125 DIN127 |
| Material | Nickel alloy/stainless steel/duplex stainless |
| Brand Name | HT |
| Model Number | Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T, Western Union | Supply Ability | 1000 pcs per month |
| Delivery Time | 30-35 working days | Packaging Details | wooden case, wooden pallet |
| Product Type | bolt nut washer | Name | Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners |
| Size | M6-M100 | Finish | Cold galvanizing, Hot-dip Galvanizing, PTFE, Zinc Nickel, Black coating, Plain |
| Standard | DIN931 DIN933 DIN912 DIN934 DIN125 DIN127 | Material | Nickel alloy/stainless steel/duplex stainless |
| Brand Name | HT | Model Number | Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners |
| Certification | ISO9001 | Place of Origin | China |
| High Light | double ended stud ，duplex steel fasteners | ||
Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners
1.Introduction
Stainless steel grade 310 MoLN is a fully austenitic stainless steel that does not have intermetallic phases such as intergranular carbide precipitations. The 310MoLN steel grade has an optimized chemical composition designed specifically for applications in urea plants. The nitrogen in the chemical composition helps to stabilize and strengthen the austenitic phase. This material provides improved corrosion-resistance in urea carbamate environments such as high-pressure strippers.
The following datasheet provides an overview of stainless steel grade 310 MoLN.
The chemical composition of stainless steel grade 310 MoLN is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | Balance |
| Chromium, Cr | 24-26 |
| Nickel, Ni | 21-23 |
| Molybdenum, Mo | 2-2.50 |
| Manganese, Mn | ≤ 2 |
| Nitrogen, N | 0.10-0.16 |
| Silicon, Si | ≤ 0.70 |
| Phosphorous, P | 0.025 |
| Carbon, C | ≤ 0.020 |
| Sulfur, S | ≤ 0.010 |
The mechanical properties of stainless steel grade 310 MoLN are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 540-740 MPa | 78320- 107327 psi |
| Proof strength | 250 MPa | 36259 psi |
| Modulus of elasticity (20°C) | 195 GPa | 28282 ksi |
| Elongation at break (In 2", 50% cold worked) | 40% | 40% |
| Hardness, Brinell | 95 | 95 |
4.UREA 25.22.2
UREA 25.22.2 chemical composition has been optimised for specific uses in Urea plants. It is a 310L modified austenitic stainless steel with low carbon, low silicon and high nitrogen additions in order to stabilize and strengthen the austenitic phase. The alloy is particularly designed for improved corrosion resistance properties in urea carbonate environments including strippers. The grade is also well designed for resistance in wet corrosive conditions due to its high contents of chromium, molybdenum and nitrogen (PREN > 33). UREA 25.22.2 is designed for the fabrication of lining interiors in Urea units or complementary products (pipes, fittings…). The grade can be used for urea strippers.
heat treatment (1140°-1180°C –2084-2156°F) and water quenching
The corrosion resistance properties are enhanced thanks to the low carbon level, low silicon level and complementary additions of nitrogen.
Typical maximum corrosion results required following different specifications for the 25.22.2 grade after 5 periods of 48 h following ASTM A 262-C practice are:
maximum general corrosion: 1,6 μm/48 h or 65 mg/dm² per hour with a maximum depth of microcracks of 100 μm in the long direction of rolling.
All material will be marked as follow:
Material will be delivered with certificate EN 10204 3.1
| EURONORM/DIN | WERKSTOFF NR. | AISI | UNS | BRAND NAME |
|---|
EURONORM/DIN | WERKSTOFF NR. | AISI | UNS | BRAND NAME |
|---|---|---|---|---|
| X2 CrNiMo 18-14-3 | 1.4435 | 316L UG | S 31603 | 316L MOD UREA ® 3R60 UREA GRADE |
| X1 CrNiMoN 25-22-2 | 1.4466/1.4465 | 310 MoLN | S 31050 | 25.22.2 ® |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1978
Total Annual:
10000000-20000000
Employee Number:
50~100
Ecer Certification：
Active Member
Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fitti... Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fitti...
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