A Bolt is a device that binds or holds together two or more components. Bolts are used in combination with nuts to fasten said components. While different applications have varying needs, the material used to create a bolt for that particular specification will also vary. For instance, DIN 1.4462 Studs, which is classified as a duplex grade has high mechanical strength. Furthermore, the corrosion resistance properties of Duplex steel uns S31803 Fasteners and astm a276/ a479 uns S31803 bolts is higher than austenitic stainless steels.
The ability of the alloy to withstand stress related corrosion cracking makes the Astm A479 Duplex Steel UNS S31803 Hex Bolts useful in environments that contain aggressive media. Chlorine ions are known to affect stainless steels because they aggressively corrode the metal, unlike the Duplex Steel Uns S31803 Hex Cap Screw. The alloy’s resistance to chlorine ions makes it useful in the marine industry, where the components are constantly exposed to seawater that contains about 3.5% salt by its total weight. The textile industry, which also makes use of salt and corrosive acids like HCl or hydrochloric acid and sulfuric acid as reagents in various operations like scouring or bleaching require a metal like Asme Sa 479 S31803 Heavy Hex Bolt.
Because the alloy has great resistance to chemical components including acid, alkalis, and neutral solutions, the Duplex Steel uns s31803 bolt would be an ideal addition to these industries. In terms of weldability, duplex alloys offer their users good weldability. Hence, using an Uns S31803 Socket Cap Screw in combination with a welding process is a practice in areas where a permanent bond is required. The rate of corrosion at elevated temperature for a Duplex S31803 Threaded Rod is lower in comparison to a conventional austenitic alloy.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| Standard | ANSI – American National Standards Institute
|
| Fasteners/ Bolts Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length | 3 mm to 200 mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe etc |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Finishing | Zinc white, (yellow, black, blue), black oxide,
Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating |
| UNS S31803 Round Bar source to produce fasteners | JSPL, Usha Martin, Tata Steel, Mukund Steel, RINL, Dhamm Steel etc. |
| Form | Duplex Steel UNS S31803 Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| Surface Coating |
|
| Packing | IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request |
| Cr | N | Ni | C | Mn | Si | P | S | Mo | |
|---|---|---|---|---|---|---|---|---|---|
| UNS S31803 | min: 21.0 max: 23.0 |
min: 0.08 max: 0.20 |
min: 4.5 max: 6.5 |
0.03 max |
2.0 max |
1.0 max |
0.03 max |
0.02 max |
min: 2.5 max: 3.5 |
Grade |
Tensile Strength (MPa) min |
Elongation (% in 50mm) |
Yield Strength 0.2% Proof (MPa) min |
Hardness Rockwell C (HR C) |
|---|---|---|---|---|
UNS-S 31803 |
650-880 |
25 |
448 |
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 |
Duplex |
Common Name |
Related Specifications |
||
|---|---|---|---|---|
European |
UNS |
ASTM/ASME |
||
SAF 2205 ® |
1.4462 |
S31803 |
||
Nominal Size of Hex Nuts or Basic Major Thread Dia |
F |
G |
H |
||||||
Width Across Flats |
Width Across Corners |
UNS S31803 Nuts Thickness |
|||||||
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
||
1/4 |
.2500 |
7/16 |
.438 |
.428 |
.505 |
.488 |
7/32 |
.226 |
.212 |
5/16 |
.3125 |
1/2 |
.500 |
.489 |
.577 |
.557 |
17/64 |
.273 |
.258 |
3/8 |
.3750 |
9/16 |
.562 |
.551 |
.650 |
.628 |
21/64 |
.337 |
.479 |
7/16 |
.4375 |
11/16 |
.688 |
.675 |
.794 |
.768 |
3/8 |
.385 |
.365 |
1/2 |
.5000 |
3/4 |
.750 |
.736 |
.866 |
.840 |
7/16 |
.448 |
.427 |
9/16 |
.5625 |
7/8 |
.875 |
.861 |
1.010 |
.982 |
31/64 |
.496 |
.473 |
5/8 |
.6250 |
15/16 |
.938 |
.922 |
1.083 |
1.051 |
35/64 |
.559 |
.535 |
3/4 |
.7500 |
1-1/8 |
1.125 |
1.088 |
1.299 |
1.240 |
41/64 |
.665 |
.617 |
7/8 |
.8750 |
1-5/16 |
1.312 |
1.269 |
1.516 |
1.447 |
3/4 |
.776 |
.724 |
1 |
1.0000 |
1-1/2 |
1.500 |
1.450 |
1.732 |
1.653 |
55/64 |
.887 |
.831 |
1-1/8 |
1.1250 |
1-11/16 |
1.688 |
1.631 |
1.949 |
1.859 |
31/32 |
.999 |
.939 |
1-3/8 |
1.3750 |
2-1/16 |
2.062 |
1.994 |
2.382 |
2.273 |
1-11/64 |
1.206 |
1.138 |
1-1/2 |
1.500 |
2-1/4 |
2.250 |
2.175 |
2.598 |
2.480 |
1-9/32 |
1.ASTM A194 GR. 8 |
1.245 |
1-5/8 |
1.6250 |
2-7/16 |
2.438 |
2.356 |
2.815 |
2.686 |
1-25/64 |
1.429 |
1.353 |
1-3/4 |
1.7500 |
2-5/8 |
2.625 |
2.538 |
3.031 |
2.893 |
1-1/2 |
1.540 |
1.460 |
2 |
2.0000 |
3 |
3.000 |
2.900 |
3.464 |
3.306 |
1-23/32 |
1.763 |
1.675 |
2-1/4 |
2.2500 |
3-3/8 |
3.375 |
3.263 |
3.897 |
3.719 |
1-15/16 |
1.986 |
1.890 |
2-1/2 |
2.5000 |
3-3/4 |
3.750 |
3.625 |
4.330 |
4.133 |
2-5/32 |
2.209 |
2.105 |
2-3/4 |
2.7500 |
4-1/8 |
4.125 |
3.988 |
4.763 |
4.546 |
2-3/8 |
2.431 |
2.319 |
NOMINAL SIZE (D) |
BODY DIAMETER |
HEAD THICKNESS |
ACROSS THE FLATS |
ACROSS CORNERS |
||||
|---|---|---|---|---|---|---|---|---|
D (MAX) |
D (MIN) |
H (MAX) |
H (MIN) |
F (MAX) |
F (MIN) |
C (MAX) |
C (MIN) |
|
m10 |
10.00 |
9.78 |
6.63 |
6.17 |
17.00 |
15.73 |
18.48 |
17.77 |
m12 |
12.00 |
11.73 |
7.76 |
4.24 |
19.00 |
17.73 |
20.78 |
20.03 |
m14 |
14.00 |
13.73 |
9.09 |
8.51 |
22.00 |
20.67 |
24.25 |
23.35 |
m16 |
16.00 |
15.73 |
10.32 |
9.68 |
24.00 |
23.67 |
27.71 |
26.75 |
m20 |
20.00 |
19.67 |
12.88 |
12.12 |
30.00 |
29.16 |
34.64 |
32.95 |
m24 |
24.00 |
23.67 |
15.44 |
14.56 |
36.00 |
35.00 |
41.57 |
39.55 |
m30 |
30.00 |
29.67 |
19.48 |
17.92 |
46.00 |
45.00 |
53.12 |
50.85 |
m36 |
36.00 |
35.61 |
23.38 |
21.63 |
55.00 |
53.80 |
63.51 |
60.79 |
m42 |
42.00 |
41.38 |
26.97 |
25.03 |
65.00 |
62.90 |
75.06 |
71.71 |
m48 |
48.00 |
47.38 |
31.07 |
28.93 |
75.00 |
72.60 |
86.60 |
82.76 |
m56 |
56.00 |
55.26 |
36.2 |
33.80 |
85.00 |
82.20 |
98.15 |
93.71 |
m64 |
64.00 |
63.26 |
41.32 |
38.68 |
95.00 |
91.80 |
109.70 |
104.65 |
m72 |
72.00 |
71.26 |
46.45 |
43.55 |
105.00 |
101.40 |
121.24 |
115.60 |
m80 |
80.00 |
79.26 |
51.58 |
48.42 |
115.00 |
111.00 |
132.72 |
126.54 |
m90 |
90.00 |
89.13 |
57.74 |
54.26 |
130.00 |
125.50 |
150.11 |
143.07 |
m100 |
90.00 |
99.13 |
63.9 |
60.10 |
145.00 |
140.00 |
167.43 |
159.60 |
Size |
USS UNS S31803 Washer |
SAE UNS S31803 Flat Washer |
||||
|---|---|---|---|---|---|---|
Inside Diameter (A) |
Outside Diameter (B) |
Thickness (C) |
Inside Diameter (A) |
Outside Diameter (B) |
Thickness (C) |
|
#2 |
- |
- |
- |
3/32" |
1/4" |
0.020" |
#4 |
- |
- |
- |
1/8" |
5/16" |
0.032" |
#6 |
- |
- |
- |
5/32" |
3/8" |
0.049" |
#8 |
- |
- |
- |
3/16" |
7/16" |
0.049" |
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