ASTM A182 F51 – Duplex Stainless Steel
ASTM A182 F51 Stainless Flange is made up of carbon, chromium, manganese, silicon, phosphorus, sulfur, nickel, nitrogen, molybdenum and iron. The 21% chromium content is the key to the extreme corrosion resistance and strength of the SA 182 f51 flanges. GNEE Steel (China) is a leading supplier and manufacturer of flanges in various scales, shapes and types. The material has high strength values. The minimum yield strength is 450MPa and the minimum tensile strength is 620MPa, with 25% minimum elongation and 290HB Brinell hardness.
ASTM A182 F51 SS Flanges Chemical Composition
| Chemical Composition Limits | |||||||||
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| Duplex F51 | 0.03 max | 2.0 max | 0.03 max | 0.02 max | 1 max | 21-23 | 4.5-6.5 | 2.5-3.5 | 0.80-0.20 |
Mechanical Properties Of ASTM A182 F51 Stainless Pipe Flanges
| Alloy | Tensile Strength N/mm² | Proof Strength 0.2% N/mm² | Elongation (%) | Hardness Brinell |
| F51 | 105 | 55 | 35 | 170-255 |
Find Here ASME B16.5 Duplex F51 Blind Flange Composition, Specification And Dimensions Table
ASTM A182 F51 is a duplex stainless steel that offers a high resistance to general , pitting,stress and crevice corrosion, as well as a high mechanical strength and good weldability. As a result, this is a highly suitable material for applications dealing with environments containing chlorides and and hydrogen sulphide.
The Properties Of ASTM A182 F51 Duplex Stainless Steel
Forging
Forging temperature for this material should be 1100 – 1250oC
Reheat as often as necessary and cool in still air.
Machining
Material in the annealed condition is readily machinable by all conventional methods.
Welding
F51 is readily weldable using many of the standard electric arc welding processes but oxyacetylene welding
is not recommended because carbon pickup in the weld metal may occur.
Heat Treatment
Anneal – Heat to 1020 – 1120oC ensuring sufficient time is allowed for the centre to achieve furnace
temperature and hold for a time commensurate with the ruling section, followed by water quenching.
GNEE Steel is a professional stainless steel supplier. If you have any stainless steel products you need, please contact us.ss@gneesteel.com
