Zhengzhou Huitong Pipeline Equipment Co.,Ltd.
Zhengzhou Huitong Pipeline Equipment Co., Ltd.
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M2-M72 Alloy 20 thread rod full threaded stud bolt DIN975 DIN976
1. UNS N08020 Alloy 20 thread rod material introduction:
Alloy 20 is an austenitic stainless steel developed for applications involving sulfuric acid. Its corrosion resistance also finds other uses in the chemical, petrochemical, power generation, and plastics industries. Alloy 20 resists pitting and chloride ioncorrosion, better than 304 stainless steel and on par with 316L stainless steel. Its copper content protects it from sulfuric acid. Alloy 20 is often chosen to solve stress corrosion cracking problems, which may occur with 316L stainless. Alloy of the same name with the designation "Cb-3" indicates columbium stabilized.
| TYPE | C | Cr | Cu | Fe | Mn | Mo | Ni | P | Si | S | Nb (Cb) |
| Alloy 20 UNS N08020 | 0.07 max | min: 19.00 max: 21.00 | min: 3.00 max: 4.00 | Balance | 2.00 max | min: 2.00 max: 3.00 | min: 32.00 max: 38.00 | 0.045 max | 1.00 max | 0.035 max | 8 XC min 1.00 max |
| Stabilized-Annealed Condition | ||||||
| Product Form | Tensile Strength, ksi (min) | Yield Strength, 0.2% offset ksi (min) | Elongation % (min) | Reduction of Area % (min) | Hardness Brinell (max) | Hardness Rockwell B (max) |
| Plate, Sheet | 80 | 35 | 30 | — | 217 | 95 |
| Bar | 80 | 35 | 30 | 50 | — | — |
| Density | Specific Gravity | Specific Heat at 32 to 212°F | Electrical Resistivity at 68°F | Poissons Ratio | Magnetic Permeability at 68°F | Modulus of Elasticity at 68°F |
| 0.292 lbs/in3 | 8.08 | 0.12 BTU/lb/°F | 644 ohm-cir mil/ft | 0.31 | 1.002 Mu | 29.3 x 106 psi |
2. Alloy 20 thread rod Product Attributes
| Dia/Thread Size | 1/4”-20 |
| Finish | Plain |
| Grade | Alloy 20 |
| Length | 2” |
| Material | Stainless Steel |
| System of Measurement | Imperial(Inch) |
| Thread | Coarse |
| Thread Type | Partial Thread |
| Type | Hex Cap Screw |
| Wrench Size | 7/16” |
| Product Weight | 0.0315 |
| Uom | each |
3.The difference between DIN975 and DIN976 for Alloy 20 washer
