close
Choose Your Site
Global
Social Media
Name | Alloy20/28/31 Hex nut |
Standard | DIN934 ISO4032 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | 1.4562 , ALLOY31 , N08028/1.4563,Alloy28,N08028/2.4660, ALLOY20,N08020 |
Grade | Grade 70 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
1.4562 Alloy31
What material is the Alloy31?
Key Features of Alloy31
outstanding corrosion resistance in alkaline and acidic halide-containing media
excellent resistance to sulfuric acid, even in highly concentrated form
excellent resistance to corrosion and erosion in phosphoric acid media
outstanding resistance to surface corrosion and local corrosion in chlorine dioxide bleaching plants in paper production
excellent resistance in reducing and oxidizing media as well as in boiling azeotropic nitric acid
Material Data Sheet
Material Designation | 1.4562 |
Alloy | Alloy 31 |
EN Material Symbol | X1NiCrMoCu32-28-7 |
UNS | N08031 |
Trademark | Nicrofer 3127 hMo |
ISO | ISO 15156/MR 0175 |
The Chemical Composition of Alloy 31 is as follows:
. | C | Si | Mn | P | S | Cr | Mo | Ni | Fe | Cu | N |
| min.% | 26,0 | 6,0 | 30,0 | bal. | 1,0 | 0,15 | |||||
| max.% | 0,015 | 0,3 | 2,0 | 0,020 | 0,010 | 28,0 | 7,0 | 32,0 | bal. | 1,4 | 0,25 |
The Mechanical Property of Alloy 31 is as follows:
Tensile Strength | Min 94KSI | Min 650MPA |
| Yield Strength | Min 40KSI | MIN 276MPA |
| Elongation | Min 40% |
Standards
Alloy 31 (Nicrofer 3127 hMo) is covered by the following standards and specifications:
European Standards:
· Material designation according to DIN: 1.4562 – X1NiCrMoCu32-28-7
· SEW 400 (Stahl-Eisen-Werkstoffblatt)
American Standards:
· UNS N08031
· ASTM B625 (Plate, Sheet, and Strip)
· ASTM B581, B649 (Rod and Bar)
· ASTM B649 (Wire)
· ASTM B564 (Forgings)
· ASME SB625, SB581, SB649 (for pressure vessel applications)
· ASME approval for pressure vessels up to 800°F (427°C)
International Standards:
· ISO 15156/NACE MR0175:2003 (Certification for acid gas applications in the oil and gas industry up to level VI)
· API 5LD (for strip products)
The material is also included in the list of the German Federal Institute for Materials Research and Testing (BAM) for transport and storage containers for hazardous goods.
Typical fields of application for Alloy 31 are:
· components for flue gas desulfurization (FGD) plants
· plants for the production of phosphoric acid via the wet digestion process
· pipes and heat exchangers for sulfuric acids contaminated with chlorides
· pipes containing ocean water and brackish water, condensers and chillers
· pickling plants for sulfuric acid as well as nitric-hydrofluoric acid
· treatment of sulfuric acids from waste
· evaporation and crystallization of salts
· components for the cellulose and paper industry
· digestion of ores, e.g. in HIPAL (high-pressure acid leach) plants for the digestion of laterite ores
· mineral oil production and refineries
· organic acids and ester synthesis
· fine chemicals
· strain-hardened transport and feed pipes as well as slicklines, wirelines and flowlines in the transport of oil and gas
· marine scrubber / ship diesel scrubber
· longitudinal welded tubes for waste to energy
Heat Treatment
To achieve optimal properties, Alloy 31 should undergo solution annealing at temperatures between 1,150 and 1,180°C (2,102 and 2,156°F). The retention time during annealing depends on the semi-finished product thickness:
· For thickness d ≤ 10 mm (0.39 in): retention time t = d × 3 min/mm
· For thickness d = 10 to 20 mm (0.39-0.79 in): retention time t = 30 min + (d – 10 mm) × 2 min/mm
· For thickness d > 20 mm (0.79 in): retention time t = 50 min + (d – 20 mm) × 1 min/mm
For maximum corrosion resistance, workpieces must be quickly cooled from the annealing temperature of at least 1,100°C (2,012°F) to 500°C (932°F) with a cooling rate of >150°C/min (>302°F/min).
Corrosion Resistance
Alloy 31 offers exceptional corrosion resistance in various environments:
· Outstanding resistance to pitting and crevice corrosion in chloride-containing environments
· Excellent resistance to sulfuric acid across a broad range of concentrations and temperatures up to 80°C (176°F)
· Superior resistance to erosion-corrosion in phosphoric acid production
· Excellent performance in chlorine dioxide bleaching plants in the pulp and paper industry
· High resistance to intergranular corrosion, with critical pitting temperatures significantly higher than conventional austenitic stainless steels
Note: The material has limited resistance to hydrochloric acid, with suitable applications only where HCl occurs in low concentrations (below 5%) at room temperature or slightly elevated temperatures.
Name | Alloy20/28/31 Hex nut |
Standard | DIN934 ISO4032 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | 1.4562 , ALLOY31 , N08028/1.4563,Alloy28,N08028/2.4660, ALLOY20,N08020 |
Grade | Grade 70 |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
1.4562 Alloy31
What material is the Alloy31?
Key Features of Alloy31
outstanding corrosion resistance in alkaline and acidic halide-containing media
excellent resistance to sulfuric acid, even in highly concentrated form
excellent resistance to corrosion and erosion in phosphoric acid media
outstanding resistance to surface corrosion and local corrosion in chlorine dioxide bleaching plants in paper production
excellent resistance in reducing and oxidizing media as well as in boiling azeotropic nitric acid
Material Data Sheet
Material Designation | 1.4562 |
Alloy | Alloy 31 |
EN Material Symbol | X1NiCrMoCu32-28-7 |
UNS | N08031 |
Trademark | Nicrofer 3127 hMo |
ISO | ISO 15156/MR 0175 |
The Chemical Composition of Alloy 31 is as follows:
. | C | Si | Mn | P | S | Cr | Mo | Ni | Fe | Cu | N |
| min.% | 26,0 | 6,0 | 30,0 | bal. | 1,0 | 0,15 | |||||
| max.% | 0,015 | 0,3 | 2,0 | 0,020 | 0,010 | 28,0 | 7,0 | 32,0 | bal. | 1,4 | 0,25 |
The Mechanical Property of Alloy 31 is as follows:
Tensile Strength | Min 94KSI | Min 650MPA |
| Yield Strength | Min 40KSI | MIN 276MPA |
| Elongation | Min 40% |
Standards
Alloy 31 (Nicrofer 3127 hMo) is covered by the following standards and specifications:
European Standards:
· Material designation according to DIN: 1.4562 – X1NiCrMoCu32-28-7
· SEW 400 (Stahl-Eisen-Werkstoffblatt)
American Standards:
· UNS N08031
· ASTM B625 (Plate, Sheet, and Strip)
· ASTM B581, B649 (Rod and Bar)
· ASTM B649 (Wire)
· ASTM B564 (Forgings)
· ASME SB625, SB581, SB649 (for pressure vessel applications)
· ASME approval for pressure vessels up to 800°F (427°C)
International Standards:
· ISO 15156/NACE MR0175:2003 (Certification for acid gas applications in the oil and gas industry up to level VI)
· API 5LD (for strip products)
The material is also included in the list of the German Federal Institute for Materials Research and Testing (BAM) for transport and storage containers for hazardous goods.
Typical fields of application for Alloy 31 are:
· components for flue gas desulfurization (FGD) plants
· plants for the production of phosphoric acid via the wet digestion process
· pipes and heat exchangers for sulfuric acids contaminated with chlorides
· pipes containing ocean water and brackish water, condensers and chillers
· pickling plants for sulfuric acid as well as nitric-hydrofluoric acid
· treatment of sulfuric acids from waste
· evaporation and crystallization of salts
· components for the cellulose and paper industry
· digestion of ores, e.g. in HIPAL (high-pressure acid leach) plants for the digestion of laterite ores
· mineral oil production and refineries
· organic acids and ester synthesis
· fine chemicals
· strain-hardened transport and feed pipes as well as slicklines, wirelines and flowlines in the transport of oil and gas
· marine scrubber / ship diesel scrubber
· longitudinal welded tubes for waste to energy
Heat Treatment
To achieve optimal properties, Alloy 31 should undergo solution annealing at temperatures between 1,150 and 1,180°C (2,102 and 2,156°F). The retention time during annealing depends on the semi-finished product thickness:
· For thickness d ≤ 10 mm (0.39 in): retention time t = d × 3 min/mm
· For thickness d = 10 to 20 mm (0.39-0.79 in): retention time t = 30 min + (d – 10 mm) × 2 min/mm
· For thickness d > 20 mm (0.79 in): retention time t = 50 min + (d – 20 mm) × 1 min/mm
For maximum corrosion resistance, workpieces must be quickly cooled from the annealing temperature of at least 1,100°C (2,012°F) to 500°C (932°F) with a cooling rate of >150°C/min (>302°F/min).
Corrosion Resistance
Alloy 31 offers exceptional corrosion resistance in various environments:
· Outstanding resistance to pitting and crevice corrosion in chloride-containing environments
· Excellent resistance to sulfuric acid across a broad range of concentrations and temperatures up to 80°C (176°F)
· Superior resistance to erosion-corrosion in phosphoric acid production
· Excellent performance in chlorine dioxide bleaching plants in the pulp and paper industry
· High resistance to intergranular corrosion, with critical pitting temperatures significantly higher than conventional austenitic stainless steels
Note: The material has limited resistance to hydrochloric acid, with suitable applications only where HCl occurs in low concentrations (below 5%) at room temperature or slightly elevated temperatures.
