19 Years manufacturer Iron Alloy Precision Alloy UNS N08031 Alloy 31 for Rwanda Factories
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HY A31 Material grades and equivalents
AISI/ASTM Alloy 31 / UNS N08031 / W.Nr 1.4562
Chemical composition:
| Alloy | % | Ni | Cr | Fe | Mo | N | C | Mn | Si | 硫 | 铜 | 磷 |
| HY A31 | Min | 30 | 26 | 余量 | 6 | 0.15 | 1 | |||||
| Max | 32 | 28 | 7 | 0.25 | 0.015 | 2 | 0.3 | 0.01 | 1.4 | 0.02 | ||
| Physical properties: | ||||||||||||
| Density | 8.1 g/cm3 | |||||||||||
| Melting point | 1350-1370 ℃ | |||||||||||
| Alloy minimum mechanical properties in the room temperature: | ||||||||||||
| Alloy | Tensile strength Rm N/mm² | Yield strength Rp0.2 N/mm² | Elongation A5 % | |||||||||
| Solution | 650 | 350 | 35 | |||||||||
Characteristic as below:
HY A31 is a nitrogen-containing iron-nickel-molybdenum alloy performance between super austenitic stainless steel and nickel-based alloy, suitable for used in chemical and petrochemical, environment engineering, oil and gas production industrial fields.
| Regular shape for all kinds of alloys | |||
| Form | Specification | Supply Form | Others |
| Sheet | Thickness：0.40-4.75mm，General Width：1000、1219、1500mm | Whole Coil or piece of it | Cold Annealed，Surface 2B、2E |
| Plate | Thickness：4.76-60mm，Width：1500、2000、2500mm，Length：3000、6000、8000、8500mm（Under 10mm plate can be coiled） | Whole Coil or piece of it | Single hot rolling，Solid solution annealed state，Surface 1D |
| Belt | Thickness：0.10-3.0mm，Width：50-500mm | Whole Coil or Specified size | Cold Annealed，Surface 2B、2E |
| Bar & Rod | Rolled barΦ5-45mm，Length≤1500mm | Polished Bar（circle、Square） | Solution annealing,descaling |
| Forged barΦ26-245mm，Length≤4000mm | |||
| Weld tube | Outer diameterΦ4.76-135mm，Wall Thickness0.25-4.00mm，Length：≤35000 mm | Base on your requirement | |
| Seamless Tube | Outer diameterΦ3-114mm，Wall Thickness0.2-4.5mm | Base on your requirement | |
| Wire | Outer diameterΦ0.1-13mm | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
| Forged piece | discs,rings,squares,blocks,slabs | Base on your requirement | Steel, Alloy |
| Flangs | All kinds of Flangs | Base on your requirement | Steel, Alloy |
| Welding Material | Coil wire Φ0.025mm-1.6mm | Base on your requirement | Certificate of Origin：America, Sweden, Britain, Germany, Austria, Italy, France. |
| Straight WireΦ1.6mm-4.0mm | |||
| Welding rodΦ1.2mm-4.0mm | |||
| Tube | Elbow, three links, four links, different diameter size | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
| Explosive bonded laminate | Raw Sheet Thickness≥2mm | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
http://www.weldingtipsandtricks.com/metals-and-how-to-weld-nickel.html
How to weld nickel alloys like hastelloy, inconel, etc. Nickel alloys have a low thermal conductivity and so limiting heat input and using lower amperage than would be used for stainless is one key to making good nickel alloy welds.
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