Hem Industries
Hem Industries
Alloy 2205 and Alloy 31803 Details & Specifications
- Alloy 2205 and Alloy 31803 (designated as S32205 and S31803) is a high strength, highly corrosion resistant duplex stainless steel with a 22% Chromium, 5 – 6% Nickel and 3% Molybdenum composition nitrogen alloyed Steel.
- Duplex Stainless Steel are neither fully austenitic like SS 304L stainless steel, nor fully ferritic, like SS 430 stainless steel.
- Alloy 2205 has about a 150% increase in strength with over twice the annealed yield strength and when heat treated possesses superior pitting and crevice corrosion resistance to SS 304L and SS 316L.
- The main difference between dual certified S32205 and S31830 is the increased corrosion resistance of the S32205 due to the tighter chemistry. The combination of high strength and high corrosion resistance makes Alloy 2205 an ideal candidate for a variety of applications and in mainly used in manufacturing Duplex Steel Fasteners.
S32205 Chemical Composition
| Chemical Composition | C | Mn | Si | Cr | Ni | Mo | P | S | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 22 | 4.5 | 3 | 0.14 | Balance | |||||
| Max | 0.03 | 2 | 1 | 23 | 6.5 | 3.5 | 0.03 | 0.02 | 0.20 | Balance |
S31803 Chemical Composition
| Chemical Composition | C | Mn | Si | Cr | Ni | Mo | P | S | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 21 | 4.5 | 2.5 | 0.08 | Balance | |||||
| Max | 0.03 | 2 | 1 | 23 | 6.5 | 3.5 | 0.03 | 0.02 | 0.20 | Balance |
PREN Value = Cr + 3.3Moly +16N
Typical PREN Value
Alloy 31803 – 36.8
Alloy 32205 – 37.8
| Mechanical Properties | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness | |||
|---|---|---|---|---|---|---|---|---|
| Min Ksi ( MPa ) | Min Ksi | Min% | Area Min % | Max ( BNH ) | ||||
| 31803 | ASTM A182 | 90 | (620) | 65 | (450) | 25 | 45 | 290( Note 1 ) |
| 32205 | ASTM A182 | 90 | (620) | 65 | (450) | 25 | 45 | - |
| 32205 | ASTM A479 | 95 | (655) | 65 | (450) | 25 | - | 290 |
Note1: Hardness Mentioned is as per ASTM A182 Standard
S32205 Chemical Composition
S31803 Chemical Composition
Duplex Steel Mechanical Properties
Note 1*: Hardness Mentioned is as per ASTM A182 Standard
Characteristics
Characteristics
EN 10088-3
1.4462
X2CrNiMoN2253
UNS 31803 / UNS 32205
ASTM A182-F51, F60
ASTM A276
ASTM A479
ASTM A484
Uranus 45n
Note :- ASTM A182 and ASTM A479 are common standard referred for Fasteners for Duplex Steel Fasteners.
Duplex Steel Fasteners Manufactured by Hem Industries
- Duplex Threaded Bar
- Duplex Stud Bolt
- Duplex Double End Stud Bolt
- Duplex Head Hex Bolt
- Duplex Head Hex Screws
- Duplex Head Hex Nut and Duplex Heavy Hex Nut
- Duplex Foundation Bolt
- Duplex Plain Washer
- Duplex Spring Washer
- Duplex Bar
Sizes Manufactured by Hem Industries
Imperial Series: 5/16 Inch upon 4 Inch Diameter
Metric Series: M6 upto M100
Dimension Standards
IS: Indian Standard
ASTM: American Standard
DIN: German Standard
ISO: European Standard
JIS: Japanese Standard
Raw Material Origin for Super Duplex Fasteners Alloy 2205 and Alloy 31803 will be from Indian Mill, USA Mill, European Mill, Japanese Mill and Korean Mill