There is 8% nickel, 18% chromium, and up to 4% molybdenum in the composition of the ASTM A193 Grade B8m Threaded Rod and it provides the material with high strength, corrosion resistance and required toughness. The prices of the fasteners are comparatively lower. The ASTM A193 B8m Bolt comes with a 515MPa min tensile strength and 205Mpa minimum yield strength. There are carbon, manganese, sulfur and silicon present in the material in smaller quantities as well.
The ASTM A193 B8m Class 1 Bolts have slightly lower mechanical properties than the class 2 fasteners and are cheaper. There are different thread types to the fasteners such as fine and coarse threads. The A193 Gr B8m Material can be used to produce any type of thread and the different sizes of the fasteners based on the standards. The applications of these corrosion resistant ASME SA193 Grade B8m fasteners can be seen in sea water, marine, ship building and other corrosive applications.
There are general corrosive applications and food grade applications that use these fasteners as well. There are super duplex and other alloy SA 193 Gr B8 Equivalent materials as well. Regal Sales Corporation is a leading manufacturer and supplier of the different types of ASTM A193 Grade B8M Bolts in various dimensions. Please feel free to contact us for any details such as the Sa 193 B8 Yield Strength, pricing, dimensions or a full product catalog.
ASTM A193 Grade B8m Bolts
ASTM A193 B8m Class 2 Bolts
ASTM A193 B8m stud bolts
Table of Content
ASTM A193 B8M Bolt Sizes
Benefits
Certification
Neck type
Production process
Surface Coating
Threads Types
Head Types
Finishing
Cutting Methods
Disadvantages
Documentation
Applications
Packaging Methods
Testing Methods
ASTM A193 B8M Bolt Supplier in India gives an extensive selection of the most common types
ASME SA193 Gr B8M Hanger Bolts
SA 193 Gr B8m Studs
Astm A193 Grade B8m Threaded Rod
ASTM A 193 B8M Class 1 U-Bolts
ASTM B8M cl 2 J Bolt
AStm A193 B8M Class 2 Flange Bolts
A193 Grade B8M Eye Bolt
| NOMINAL SIZE (D) | m12 | m14 | m20 | m24 | m36 | m48 | m64 | m72 | m90 | |
|---|---|---|---|---|---|---|---|---|---|---|
| BODY DIAMETER | D (MAX) | 12 | 14 | 20 | 24 | 36 | 48 | 64 | 72 | 90 |
| D (MIN) | 11.73 | 13.73 | 19.67 | 23.67 | 35.61 | 47.38 | 63.26 | 71.26 | 89.13 | |
HEAD THICK ASTM A193 |
H (MAX) | 7.76 | 9.09 | 12.88 | 15.44 | 23.38 | 31.07 | 41.32 | 46.45 | 57.74 |
| H (MIN) | 4.24 | 8.51 | 12.12 | 14.56 | 21.63 | 28.93 | 38.68 | 43.55 | 54.26 | |
| ASTM A193 THE FLATS | F (MAX) | 19 | 22 | 30 | 36 | 55 | 75 | 95 | 105 | 130 |
| F (MIN) | 17.73 | 20.67 | 29.16 | 35 | 53.8 | 72.6 | 91.8 | 101.4 | 125.5 | |
| ASTM A193 CORNERS | C (MAX) | 20.78 | 24.25 | 34.64 | 41.57 | 63.51 | 86.6 | 109.7 | 121.24 | 150.11 |
| C (MIN) | 20.03 | 23.35 | 32.95 | 39.55 | 60.79 | 82.76 | 104.65 | 115.6 | 143.07 | |

| Diameter (D) | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Body Diameter (D) | MAX | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 | 1.149 | 1.277 | 1.404 | 1.531 |
| MIN | 0.482 | 0.605 | 0.729 | 0.852 | 0.976 | 1.098 | 1.223 | 1.345 | 1.47 | |
| Across the Flats (F) | MAX | 0.875 | 1.062 | 1.25 | 1.438 | 1.625 | 1.812 | 2 | 2.188 | 2.375 |
| MIN | 0.85 | 1.031 | 1.212 | 1.394 | 1.575 | 1.756 | 1.938 | 2.119 | 2.3 | |
| Across the Corners © | MAX | 1.01 | 1.227 | 1.443 | 1.66 | 1.876 | 2.093 | 2.309 | 2.526 | 2.742 |
| MIN | 0.969 | 1.175 | 1.383 | 1.589 | 1.796 | 2.002 | 2.209 | 2.416 | 2.622 | |
| Head Height (H) | MAX | 0.364 | 0.444 | 0.524 | 0.604 | 0.7 | 0.78 | 0.876 | 0.94 | 1.036 |
| MIN | 0.302 | 0.378 | 0.455 | 0.531 | 0.591 | 0.658 | 0.749 | 0.81 | 0.902 | |
| Nominal Size | D Body Diameter |
A Head Diameter |
H Head Height |
S Head SideHeight |
T KeyEngagmt |
G WallThkns |
K Chamfer orRadius |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | Max | Min | Min | Max | ||
| 0 | 0.0600 | 0.0600 | 0.0568 | 0.096 | 0.091 | 0.060 | 0.057 | 0.054 | 0.025 | 0.020 | 0.003 |
| 1 | 0.0730 | 0.0730 | 0.0695 | 0.118 | 0.112 | 0.073 | 0.070 | 0.066 | 0.031 | 0.025 | 0.003 |
| 2 | 0.0860 | 0.0860 | 0.0822 | 0.140 | 0.134 | 0.086 | 0.083 | 0.077 | 0.038 | 0.029 | 0.003 |
| 3 | 0.0990 | 0.0990 | 0.0949 | 0.161 | 0.154 | 0.099 | 0.095 | 0.089 | 0.044 | 0.034 | 0.003 |
| 4 | 0.1120 | 0.1120 | 0.1075 | 0.183 | 0.176 | 0.112 | 0.108 | 0.101 | 0.051 | 0.038 | 0.005 |
| 5 | 0.1250 | 0.1250 | 0.1202 | 0.205 | 0.198 | 0.125 | 0.121 | 0.112 | 0.057 | 0.043 | 0.005 |
| 6 | 0.1380 | 0.1380 | 0.1329 | 0.226 | 0.218 | 0.138 | 0.134 | 0.124 | 0.064 | 0.047 | 0.005 |
| 8 | 0.1640 | 0.1640 | 0.1585 | 0.270 | 0.262 | 0.164 | 0.159 | 0.148 | 0.077 | 0.056 | 0.005 |
| 10 | 0.1900 | 0.1900 | 0.1840 | 0.312 | 0.303 | 0.190 | 0.185 | 0.171 | 0.090 | 0.065 | 0.005 |
| 1/4 | 0.2500 | 0.2500 | 0.2435 | 0.375 | 0.365 | 0.250 | 0.244 | 0.225 | 0.120 | 0.095 | 0.008 |
| 5/16 | 0.3125 | 0.3125 | 0.3053 | 0.469 | 0.457 | 0.312 | 0.306 | 0.281 | 0.151 | 0.119 | 0.008 |
| 3/8 | 0.3750 | 0.3750 | 0.3678 | 0.562 | 0.550 | 0.375 | 0.368 | 0.337 | 0.182 | 0.143 | 0.008 |
| 7/16 | 0.4375 | 0.4375 | 0.4294 | 0.656 | 0.642 | 0.438 | 0.430 | 0.394 | 0.213 | 0.166 | 0.010 |
| 1/2 | 0.5000 | 0.5000 | 0.4919 | 0.750 | 0.735 | 0.500 | 0.492 | 0.450 | 0.245 | 0.190 | 0.010 |
| 5/8 | 0.6250 | 0.6250 | 0.6163 | 0.938 | 0.921 | 0.625 | 0.616 | 0.562 | 0.307 | 0.238 | 0.010 |
| 3/4 | 0.7500 | 0.7500 | 0.7406 | 1.125 | 1.107 | 0.750 | 0.740 | 0.675 | 0.370 | 0.285 | 0.010 |
| 7/8 | 0.8750 | 0.8750 | 0.8647 | 1.312 | 1.293 | 0.875 | 0.864 | 0.787 | 0.432 | 0.333 | 0.015 |
| 1 | 1.0000 | 1.0000 | 0.9886 | 1,500 | 1.479 | 1,000 | 0.988 | 0.900 | 0.495 | 0.380 | 0.015 |
| Diameter | Torque Feet | ||
|---|---|---|---|
| 70% | 30% | 100% | |
| 7/8 | 166 | 71 | 237 |
| 3/4 | 129 | 55 | 184 |
| 9/16 | 53 | 23 | 75 |
| 1/2 | 36 | 16 | 52 |
| 5/8 | 73 | 31 | 104 |
| 1 | 249 | 107 | 356 |
| 1.1/4 | 417 | 179 | 596 |
| 1.1/2 | 574 | 246 | 821 |
| 1.5/8 | 445 | 191 | 636 |
| 1.1/8 | 297 | 127 | 424 |
| 1.3/8 | 435 | 186 | 622 |
| 1.9/16 | 392 | 168 | 560 |
| 1.7/8 | 696 | 298 | 994 |
| 1.3/4 | 561 | 240 | 801 |
| 2.1/2 | 1709 | 733 | 2442 |
| 2.1/4 | 1234 | 529 | 1762 |
| 2 | 853 | 366 | 1219 |
| 3 | 3008 | 1289 | 4297 |
| 2.3/4 | 2300 | 986 | 3285 |
ASTM A193 B8M Bolt Manufacturer in India offers fasteners with superior physical properties
| Property | Value |
|---|---|
| Density | ~8.0 g/cm³ (8000 kg/m³) |
| Melting Point | ~1375–1400°C (2500–2550°F) |
| Thermal Conductivity | ~16.2 W/m·K at 20°C |
| Electrical Resistivity | ~7.4 x 10⁻⁷ Ω·m at 20°C |
| Modulus of Elasticity | ~193 GPa |
| Thermal Expansion Coefficient | ~16.0 µm/m·K (0 to 100°C) |
| Specific Heat Capacity | ~500 J/kg·K at 20°C |
ASTM A193 B8M Bolt Manufacturer in India offers a Excellent weight chart for fasteners
| Bolt Diameter (inches) | Weight per Inch (lbs) | Weight per Foot (lbs) |
|---|---|---|
| 1/4" | 0.04 | 0.48 |
| 5/16" | 0.06 | 0.72 |
| 3/8" | 0.09 | 1.08 |
| 7/16" | 0.12 | 1.44 |
| 1/2" | 0.16 | 1.92 |
| 9/16" | 0.21 | 2.52 |
| 5/8" | 0.26 | 3.12 |
| 3/4" | 0.38 | 4.56 |
| 7/8" | 0.52 | 6.24 |
| 1" | 0.66 | 7.92 |
| 1-1/8" | 0.86 | 10.32 |
| 1-1/4" | 1.06 | 12.72 |
| 1-1/2" | 1.56 | 18.72 |
| 1-3/4" | 2.14 | 25.68 |
| 2" | 2.80 | 33.60 |
| Grade | Country | 304 | 304 L | 310 | 316 | 316 L | 410 | 431 |
|---|---|---|---|---|---|---|---|---|
| ASTM | America | ASTM A 193 Gr B8 | ASTM A 320 Ge B8 | ASTM A 479 | ASTM A 193 Gr B8M | ASTM A 320 Ge B8M | ||
| EN | European | 1.4301 | 1.4306 | 1.4841 | 1.4401 | 1.4404 | 1.4006 | 1.4057 |
| BS | British | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 | BS 970 |
| UNS | North America | S30400 | S30403 | S31000 | S31600 | S31603 | S41000 | S43100 |
| DIN | German | X 5CrNi1810 | X 2CrNi1911 | X 12 CrNi 25 21 | X 5 CrNiMo 17 13 2 | X 2 CrNiMo 17 13 2 | X 10Cr13 | X 20CrNi172 |
Tensile Strength
75,000 psi (515 MPa)
Yield Strength
30,000 psi (205 MPa)
Elongation
30%
Melting Point
1375°C to 1400°C
| Country Name | Delivery Time |
|---|---|
| Egypt |
18 days
|
| Malaysia |
10 days
|
| Oman |
12 days
|
| Saudi Arabia |
10 days
|
| UAE |
7 days
|
| Singapore |
7 days
|
| Turkey |
21 days
|
| Jordan |
21 days
|
| South Africa |
25-30 days
|
Yes, the fasteners typically undergo a carbide solution treatment to improve corrosion resistance and mechanical properties.
| Property | Class 1 | Class 2 |
|---|---|---|
| Heat Treatment | Solution-treated for better properties | Not solution-treated, or less heat treatment |
| Tensile Strength | 75 ksi minimum | 70 ksi minimum |
| Yield Strength | 30 ksi minimum | 25 ksi minimum |
| Corrosion Resistance | Higher due to solution treatment | Lower, though still good |
| Application | High-strength, high-corrosion areas | Less critical, general use applications |
| Cost | More expensive | More affordable |
ASTM Fasteners
