THigh tensile alloys may crack under tension if tensile stress is applied to them. Stress related corrosion cracking, or SCC, is the term used to describe this kind of failure. Materials with austenite in their microstructure, like stainless steel grades 304 or 316, are typically quite ductile, which makes them vulnerable to SCC. The Super Duplex UNS S32750 Bolts, which are categorised as a duplex class alloy, include 50% austenite crystals in their microstructure, similar to grade 304 or 316, which are austenitic stainless steels.
The tougher crystal ferrite makes up the second half of the microstructure of the SDSS UNS s32750 Fasteners ASTM a276/ a479 uns s32750 Threaded Rod. Because of this, even though this alloy exhibits ductility, the rate of SCC occuring in it is substantially lower. Additionally, heat treatments are carried out on the alloy to strengthen the hardness of the Astm A479 SDSS UNS S32750 Hex Bolts. Their minimum distortion as a result of stress. Particularly in situations with high levels of chlorine, SCC is present.
Contrary to Super Duplex Steel Uns S32750 Hex Cap Screw, Chlorine Induced SCC negatively affects ordinary stainless steels such as grade 304. Manufacturers created the Asme Sa 479 S32750 Heavy Hex Bolt to be used in environments that contain chlorine and its derivative products as a safety measure against failure to stress related corrosion cracking because the alloys used in these environments would eventually succumb to failure by Chlorine induced SCC.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| American Standards | ANSI – American National Standards Institute
|
| UNS S32750 Bolts Size range | 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 |
| Duplex Round Bar Source to produce UNS S32750 Bolts | JSPL, Mukund Steel, Usha Martin, Tata Steel, RINL, Dhamm Steel etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Manufacturing Process |
|
| Surface Coating |
|
| Packing | IN BULK: Small Boxes / pallet, canton, carton / pallet or as per client request |
| C | N | P | Si | Mn | Mo | Ni | Cr | S | Other |
|---|---|---|---|---|---|---|---|---|---|
| 0.030 | 0.24/0.32 | 0.035 | 0.80 | 1.20 | 3.0/5.0 | 6.00/8.00 | 24.0/26.0 | 0.020 | Cu:0.50 |
| Density | Melting Range | Yield Stress (0.2%Offset) | Tensile Stress | Elongation |
|---|---|---|---|---|
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi - 80000 , MPa - 550 | Psi - 116000 , MPa - 800 | 15 % |
| STANDARD | ASTM | ASME | UNS | WERKSTOFF NR. |
|---|---|---|---|---|
| Super Duplex 2507 | A276/ A479 | SA 276/ SA 479 | S32750 | 1.4410 |
| UNS S32750 wedge anchor bolts | Indonesia, Philippines, Belgium, Dammam -KSA |
| Duplex steel S32750 Flange Bolts | France, Thailand, Europe, Qatar |
| SD-2507, UNS-S32750 Bolts, UNC Nuts/ Washer | Thailand, Malaysia, Germany, Czechia |
| Super Duplex UNS S32750 Plain Eye Bolts | Bangladesh, Finland, South Africa, Malaysia |
| M12 x 100mm uns s32750 Hex. flange Head bolts | Kuwait, Brazil, USA, South Africa |
| SDSS UNS S32750 Socket Head Bolts | Singapore, Saudi Arabia (KSA), Singapore, Bahrain |
| UNS S32750 Stud Bolts | UK, Nigeria, Australia, Philippines |
| SDSS 1.4410 Hex Nuts | Malaysia, Hong Kong, UAE, Oman |
| M30, M36, M42, M48 Super Duplex Bolts Grade S32750 | Singapore, Iran, Italy, Chile, Fujairah, UAE |
| M10 Super Duplex UNS S32750 material FULL THREAD STUD + HEX NUTS + PLAIN WASHER | Malaysia, United Arab Emirates (UAE) Norway, Turkey |
| M16 Super Duplex SS S32750 Bolts | Malaysia, Dubai, Russia, Netherlands |
| M20 Hex head Bolts Gr UNS S32750 | Spain, UK, Mexico, Egypt |
| M8 Stainless steel super duplex uns s32750 hex nuts | UAE, United Kingdom -UK Malaysia, Europe |
| Super Duplex UNS S32750 Stud Bolts with hex Nuts and Flat Washer | Poland, Ellington -United States, Canada, UK |
| F53 SAF 2507 UNS S32750 Hex Bolts and Nuts | Malaysia, Singapore, Canada, Philippines |
| Super Duplex UNS S32750 bolts and nuts | Japan, Malaysia, Romania, Europe |
| UNS S32750 U Bolts | Malaysia, China, Colombia, Sweden |
| DIN 1.4410 UNS S32760 Heavy Hex Bolts | Taiwan, Philippines, Los Alamos -Mexico, Malaysia |
| Super Duplex Alloy 255 Ferralium 255 S32550 Bolts | South Korea, NY 12203 (USA), Malaysia, Singapore |
Basic Major Thread Diameter Nominal Size |
F |
G |
H |
||||||
|---|---|---|---|---|---|---|---|---|---|
Width Across Flats |
Width Across Corners |
Nut 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 |
BOLT 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 |
Washer Size |
USS Washer |
SAE Washer |
||||
|---|---|---|---|---|---|---|
ID (A) |
OD (B) |
Thickness (C) |
ID (A) |
OD (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" |
