Super Duplex Stainless Steel 2507 DIN125
Special Stainless Steel Flat washer
What is Super duplex stainless steel 2507 ?
As a representative of super duplex stainless steel, 2507 (UNS S32750) has become the preferred material for harsh environments such as petroleum, chemical, and marine engineering due to its perfect balance of high strength and corrosion resistance.
The chemical composition of super duplex stainless steel 2507 has been carefully designed, and its core elements include Chromium (Cr): 24.0-26.0%, Molybdenum (Mo): 3.0-5.0% ,Nickel (Ni): 6.0-8.0% and other elements.
Its fasteners including washers, bolts,nuts are commonly used in industries such as oil and gas, chemical, seawater desalination and ship engineering.
Technical Introduction- Comprehensive Analysis of Super Duplex Stainless Steel 2507

DETAIL DIMENSIONS OF Super Duplex 2507 DIN125 :
| M3 | M4 | M5 | M6 | M8 | M10 | |
| dc inner dia | 3.2-3.38 | 4.3-4.48 | 5.3-5.48 | 6.4-6.62 | 8.4-8.62 | 10.5-10.77 |
| d outer dia | 6.64-7 | 8.64-9 | 9.64-10 | 11.57-12 | 15.57-16 | 19.48-20 |
| h thickness | 0.45-0.55 | 0.7-0.9 | 0.9-1.1 | 1.4-1.8 | 1.4-1.8 | 1.8-2.2 |
| M12 | M14 | M16 | M18 | M20 | M22 | |
| dc inner dia | 13-13.27 | 15-15.27 | 17-17.27 | 19-19.33 | 21-21.33 | 23-23.33 |
| d outer dia | 23.48-24 | 27.48-28 | 29.48-30 | 33.38-34 | 36.38-37 | 38.38-39 |
| h thickness | 2.3-2.7 | 2.3-2.7 | 2.7-3.3 | 2.7-3.3 | 2.7-3.3 | 2.7-3.3 |
| M24 | M27 | M30 | M36 | M42 | M48 | |
| dc inner dia | 25-25.33 | 28-28.33 | 31-31.39 | 37-37.62 | 43-43.62 | 50-50.62 |
| d outer dia | 43.38-44 | 49.38-50 | 55.26-56 | 64.8-66 | 76.8-78 | 90.60-92 |
| h thickness | 3.7-4.3 | 3.7-4.3 | 3.7-4.3 | 4.4-5.6 | 6-8 | 7-9 |
MATERIAL: 1.4410 Super Duplex Stainless Steel 2507 (UNS S32750)
Metric or Inch: Metric
Finish: Plain
RoHS Compliant
More information about screws made of Nickel Alloys and Special Stainless Steel material please check:
Nickel Alloys and Special Stainless Steel
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