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Product Overview
ASTM A193 Grade B16 threaded rods are high-strength alloy steel fasteners manufactured from chromium-molybdenum-vanadium steel, specifically designed for high-temperature and high-pressure bolting applications. These rods are produced from material conforming to ASTM A193 B16, which requires a minimum tensile strength of 860 MPa (125 ksi) and are typically supplied in the quenched and tempered condition.
ASTM A193 B16 threaded rods are widely specified for use in petrochemical, power generation, and refinery applications, especially where elevated temperatures up to 593°C (1100°F) are encountered. Their superior creep resistance and mechanical stability make them the preferred choice for critical flange connections, pressure vessels, and heat exchanger assemblies.
| Material | Alloy Steel (Cr-Mo-V) |
| UNS Number | K32045 |
| DIN Number | 1.7711 |
| Material Standard | ASTM A193 Grade B16 |
| Rod Standard (Metric) | DIN 976-1 |
| Rod Standard (Inch) | ASME B18.31.3 |
| Thread Form | ISO Metric / UNC / UNF |
| Diameter Range | M6-M100 / ¼"-4" |
| Tensile Strength | 860 MPa (125 ksi) min |
| Yield Strength | 690 MPa (100 ksi) min |
| Hardness | Max 35 HRC / 321 HB |
Complete the Fastener Set
Technical Data
| Size (M) | Pitch (mm) | Core Dia (mm) | Max Length (mm) |
|---|---|---|---|
| M6 | 1.0 | 4.8 | 2000 |
| M8 | 1.25 | 6.6 | 2000 |
| M10 | 1.5 | 8.2 | 3000 |
| M12 | 1.75 | 10.0 | 3000 |
| M16 | 2.0 | 13.6 | 3000 |
| M20 | 2.5 | 17.0 | 3000 |
| M24 | 3.0 | 20.4 | 3000 |
| M30 | 3.5 | 26.4 | 3000 |
| M36 | 4.0 | 32.4 | 3000 |
| M42 | 4.5 | 38.4 | 3000 |
| M48 | 5.0 | 44.4 | 3000 |
| M56 | 5.5 | 52.2 | 3000 |
| M64 | 6.0 | 60.2 | 3000 |
| M72 | 6.0 | 68.2 | 3000 |
| M80 | 6.0 | 76.2 | 3000 |
| M100 | 6.0 | 96.2 | 3000 |
| Standard | Covers | Thread |
|---|---|---|
| DIN 976-1 | Threaded rods, full thread | Metric |
| ASME B18.31.3 | Threaded rods, inch | UNC/UNF |
| ISO 898-1 | Mechanical properties | Metric |
| ASME B1.1 | Unified threads | UNC/UNF |
| ASTM A193 | Material & mechanical | All |
| Material Standard | Requirement |
|---|---|
| ASTM A193 B16 | Alloy steel rod |
| ASTM A962 | General requirements |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.37-0.49 |
| Manganese (Mn) | 0.65-1.10 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.15-0.35 |
| Chromium (Cr) | 0.75-1.20 |
| Molybdenum (Mo) | 0.15-0.25 |
| Vanadium (V) | 0.28-0.33 |
| Nickel (Ni) | 0.25 max |
| Copper (Cu) | 0.20 max |
Fastener Performance
| Rod Size | Dry (Nm) | Lubricated (Nm) | Clamp Load (kN) |
|---|---|---|---|
| M12 | 110 | 88 | 40 |
| M16 | 270 | 216 | 80 |
| M20 | 540 | 432 | 125 |
| M24 | 930 | 744 | 180 |
| M30 | 1850 | 1480 | 290 |
| M36 | 3200 | 2560 | 420 |
| M42 | 5100 | 4080 | 580 |
| M48 | 7600 | 6080 | 770 |
Industry Applications
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