Nascent Pipe & Tubes is one of the well-known manufacturing unit and supplier of Duplex Steel S31803 / S32205 (Bolts / Nuts), which always react more sensitively towards precipitation. Duplex S31803 Hex Head Bolts should be ensured that the temperature range between 950 Degree C and 700 Degree C is traversed in no more than two minutes. Due to the possibility that other undesired metallic phases could arise, these Duplex S32205 Hex Head Nuts is further cooling down to 300 Degree C and should be undertaken as quickly as possible. Duplex S31803 Square Bolts are also easy to weld according to the usual rules for welding stainless steels.
xtremely low and extremely high heat input should be avoided in these Duplex S32205 Square Nuts, depending on the seam geometry, the thickness of the steel and the welding process.
Duplex S31803 / S32205 Bolt/Nut Manufacturers, Duplex S31803 / S32205 Bolt/Nut Suppliers, Duplex S31803 / S32205 Bolt/Nut Stockists, Duplex S31803 / S32205 Bolt/Nut Exporters
Duplex S31803 / S32205 Bolt/Nut Manufacturers in India, Duplex S31803 / S32205 Bolt/Nut Suppliers in India, Duplex S31803 / S32205 Bolt/Nut Stockists in India, Duplex S31803 / S32205 Bolt/Nut Exporters in India
Therefore Duplex S31803 Eye Bolts is necessary to monitor inter – pass temperature and the heat input during the welding process.
Duplex S31803 / S32205 Bolt/Nut Manufacturers in Mumbai, Duplex S31803 / S32205 Bolt/Nut Suppliers in Mumbai, Duplex S31803 / S32205 Bolt/Nut Stockists in Mumbai, Duplex S31803 / S32205 Bolt/Nut Exporters in Mumbai
The safest way to a balanced ferrite / austenite ratio in the weld seam of these Duplex S32205 Eye Nuts is subsequent heat treatment, so-called solution annealing. For Duplex S31803 T-Bolts, holding times of 2 minutes to 3 minutes for each mm of wall thickness at temperatures around 1080 Degree C are sufficient to achieve a balanced austenite / ferrite ratio. After annealing, cooling of these Duplex S32205 T-Nuts as rapidly as possible is advisable.
Duplex S31803 / S32205 Bolt/Nut Specifications
| Specifications |
ASTM A 479 ASME SA 479 |
| Standard |
DIN, ASTM, BS and all International Standards |
| Length |
3 mm to 200 mm |
| Size |
M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type |
Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
S31803 / S32205 Duplex Bolt/Nut Chemical Composition
| S31803 / S32205 |
C |
N |
P |
Si |
Mn |
Mo |
Fe |
Cr |
S |
Ni |
| 1.0 |
0.03 |
0.02 |
2.0 |
3.0 – 3.5 |
22.0 – 23.0 |
0.03 |
4.5 – 6.5 |
0.14 – 0.2 |
Bal |
Duplex Steel S31803 / S32205 Bolt/Nut Mechanical Properties
| S31803 / S32205 |
| Density |
Melting Point |
Yield Strength (0.2%Offset) |
Tensile Strength |
Elongation |
| 7.8 g/cm3 |
1350 °C (2460 °F) |
Psi – 80000 , MPa – 550 |
Psi – 116000 , MPa – 800 |
15 % |
Equivalent Grades for S31803 / S32205 Duplex Stainless Steel Bolt/Nut
| STANDARD |
UNS |
WERKSTOFF NR. |
| Duplex S31803 |
S31803 |
1.4462 |
| Duplex S32205 |
S32205 |
1.4462 |
Duplex Steel Uns S31803 & UNS S32205 Bolt Grade Designation
| Duplex |
Common Name |
Related Specifications |
|
|
European |
UNS |
ASTM/ASME |
| Duplex 2205/31803 |
SAF 2205 ® |
1.4462 |
S31803/S32205 |
F51/F60 |
Duplex Steel UNS S31803 & UNS S32205 Screw Physical Properties
| Density lbm/in3 |
Electrical Resistivity mW•in |
Electrical Resistivity (in x 10-6) |
Heat Capacity BTU/lbm•°F |
Thermal Conductivity (BTU/hr•ft•°F) |
|
| at 68°F |
0.278 |
0.112 |
8.7 |
27.6 |
33.5 |
| at 212°F |
|
0.119 |
9.2 |
26.1 |
35.4 |
| at 392°F |
|
0.127 |
9.8 |
25.4 |
37.4 |
| at 572°F |
|
0.134 |
10.4 |
24.9 |
39.4 |
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