ASTM A540 Alloy Steel Bolts, ASTM A540 Square Bolts, ASTM A540 Hex Bolts, ASTM A540M Grade B21 Bolts Exporter in Worldwide.
Torq Bolts Inc. is a recognized supplier of ASTM A540 BOLTS, which are obtainable in a number of shapes, sizes and dimensions. We offer the similar level of attention and service to aspect all of your requirements for ASME SA 540 DIN 933 BOLTS. These ASME SA 540 12-Point BOLTS are being used when parts should be placed beforehand of last attachment. Manufactured by using best quality of steel, theseASTM A540 Square BOLTS is presented by means of sturdy design and durable finish. Moreover, our obtainableASTM A540 Hex BOLTS is methodically tested by a group of quality specialists in contradiction of different quality strictures. ASME SA 540 BOLTS is generally used for spot and seam welding electrodes, plastic mould parts, etc. Our ASTM A540 DIN 931 BOLTS maintains power over a widespread temperature array, and is striking for soaring temperature uses.
However, our presented ASTM A540 DIN 933 BOLTS are precisely recognized for dimensional accurateness, extensive working life, corrosion resistance, robust structure and dependability. ASTM A540 12-Point BOLTS have a number of excellent features to provide like Heftiness, Lengthier life, Dimensional correctness, and more. So as to meet dissimilar requirements of our patron, our company has turn up by means of an enormous range of ASTM A540 Square BOLTS, which are made-up by means of accuracy using finest grade of raw materials. The presented ASTM A540 Hex BOLTS is severely inspected contrary to every predefined limit to guarantee perfection and as well avail in industry at very reasonably priced rate.
ASTM A540 Class 1 Bolts, ASTM A540 Grade B22 Bolts, ASTM A540 Hex Cap Screws, ASTM A540 Studs Supplier in India.
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ASTM A540 Stud Bolts, ASTM A540 Socket Head Cap Bolts, ASTM A540M Threaded Rods Manufacturer in Mumbai, India.
Production, Supply, Stock Range of ASTM A540 Rods
Standard Specification for Alloy-Steel Bolting for Special Applications
This specification covers 5 grades of bolting with twelve classes of yield strength ranging from 50 to 120 ksi [345 to 827 Mpa] for used in high temperature service such as fasteners for pressure bessel and valve flanges. The specification is expressed in both inch-pound units and in SI units. BoltPort primarily stocks and supply A453 Grade 660 Boltings for high temperature service. We stock round bar in Grade 660, Grade 651 & Grade 665 for quick manufacturing these bolts. These bolts are solution annealed and age hardened to provide maximum efficiency in their applications. We offer Rupture Test Facility for sufficient quantity order.
ASTM 540 / A540M Bolting Grades and Classes
Grade B21 | Class 5 | Class 4 | Class 3 | Class 2 | Class 1 |
Grade B22 | Class 5 | Class 4 | Class 3 | Class 2 | Class 1 |
Grade B23 | Class 5 | Class 4 | Class 3 | Class 2 | Class 1 |
Grade B24 | Class 5 | Class 4 | Class 3 | Class 2 | Class 1 |
Grade B24V | -- | -- | Class 3 | Class 2 | Class 1 |
ASTM A540 / A540M Bolts Chemical Composition
Element | |||||
Grade B21 | Grade B22 | Grade B23 | Grade B24 | Grade B24V | |
Cr-Mo-V | 4142-H | E-4340-H | 4340-Mod. | 4340V-Mod. | |
Chrome Moly Vanadium | Chrome Moly | Chrome Nickel Vanadium | Chrome Nickel Vanadium | Chrome Nickel Moly Vanadium | |
RangeB, % | |||||
Carbon | 0.35 - 0.44 | 0.39 - 0.46 | 0.37 - 0.44 | 0.37 - 0.44 | 0.37 - 0.44 |
Manganese | 0.45 - 0.70 | 0.65 - 1.10 | 0.60 - 0.95 | 0.70 - 0.90 | 0.60 - 0.95 |
PhosphorusC, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
SulfurC, max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 |
Silicon | 0.15 - 0.35 | 0.15 - 0.35 | 0.15 - 0.35 | 0.15 - 0.35 | 0.15 - 0.35D |
Chromium | 0.80 - 1.15 | 0.75 - 1.20 | 0.65 - 0.95 | 0.70 - 0.95 | 0.60 - 0.95 |
Nickel | -- | -- | 1.55 - 2.00 | 1.65 - 2.00 | 1.55 - 2.00 |
Molybdenum | 0.50 - 0.65 | 0.15 - 0.25 | 0.20 - 0.30 | 0.30 - 0.40 | 0.40 - 0.60 |
Vanadium | 0.25 - 0.35 | --- | --- | --- | 0.04 - 0.10 |
ASTM A540 Bolts Mechanical Properties
Grades | Class | Diameter, inch. | Tensile Strength, min | Yield Strength, 0.2% offset, min |
Elongation min, % |
Reduction of Area, min, % |
Surface Brinell Hardness |
Charpy V Notch +10 °F [-12.2 °C] | |
Inch Pound Units | |||||||||
ksi | ksi | In 2 inch. | Min | Max | |||||
Grade B21 (Cr-Mo-V) | 5 | to 2, incl. | 120 | 105 | 15 | 50 | 241 | 285 | D |
5 | over 2 to 6, incl. | 115 | 100 | 15 | 50 | 248 | 302 | D | |
5 | over 6 to 8, incl. | 115 | 100 | 15 | 50 | 255 | 311 | D | |
4 | to 3, incl. | 135 | 120 | 13 | 45 | 269 | 331 | D | |
4 | over 3 to 6, incl. | 135 | 120 | 13 | 45 | 277 | 352 | D | |
3 | to 3, incl. | 145 | 130 | 12 | 40 | 293 | 352 | D | |
3 | over 3 to 6, incl. | 145 | 130 | 12 | 40 | 308 | 375 | D | |
2 | to 4, incl. | 155 | 140 | 11 | 40 | 311 | 401 | D | |
1 | to 4, incl. | 165 | 150 | 10 | 35 | 321 | 429 | D | |
Grade B22 (4142-H) | 5 | to 2, incl. | 120 | 105 | 15 | 50 | 248 | 293 | A |
5 | over 2 to 4, incl. | 115 | 100 | 15 | 50 | 255 | 302 | D | |
4 | to 1, incl. | 135 | 120 | 13 | 45 | 269 | 341 | A | |
4 | over 1 to 4, incl. | 135 | 120 | 13 | 45 | 277 | 363 | D | |
3 | to 2, incl. | 145 | 130 | 12 | 40 | 293 | 363 | D | |
3 | over 2 to 4, incl. | 145 | 130 | 12 | 40 | 302 | 375 | D | |
2 | to 3, incl. | 155 | 140 | 11 | 40 | 311 | 401 | D | |
1 | to 1-1/2, incl. | 165 | 150 | 10 | 35 | 321 | 401 | D | |
Grade B23 (E-4340-H) | 5 | to 6, incl. | 120 | 105 | 15 | 50 | 248 | 311 | A |
5 | over to 8, incl. | 115 | 100 | 15 | 50 | 255 | 321 | A | |
5 | over 8 to 9-1/2, incl. | 115 | 100 | 15 | 50 | 262 | 321 | D | |
4 | to 3, incl. | 135 | 120 | 13 | 45 | 269 | 341 | A | |
4 | over 3 to 6, incl. | 135 | 120 | 13 | 45 | 277 | 352 | A | |
4 | over 6 to 9-1/2, incl. | 135 | 120 | 13 | 45 | 285 | 363 | D | |
3 | to 3, incl. | 145 | 130 | 12 | 40 | 293 | 363 | B | |
3 | over 3 to 6, incl. | 145 | 130 | 12 | 40 | 302 | 375 | B | |
3 | over 6 to 9-1/2, incl. | 145 | 130 | 12 | 40 | 311 | 388 | D | |
2 | to 3, incl. | 155 | 140 | 11 | 40 | 311 | 388 | D | |
2 | over 3 to 6, incl. | 155 | 140 | 11 | 40 | 311 | 401 | D | |
1 | to 3, incl. | 165 | 150 | 10 | 35 | 321 | 415 | D | |
1 | over 3 to 6, incl. | 165 | 150 | 10 | 35 | 331 | 429 | D | |
1 | over 6 to 8, incl. | 165 | 150 | 10 | 35 | 341 | 444 | D | |
Grade B24 (4340 Mod.) | 5 | to 6, incl. | 120 | 105 | 15 | 50 | 248 | 311 | A |
5 | over 6 to 8, incl. | 115 | 100 | 15 | 50 | 255 | 321 | A | |
5 | over 8 to 9-1/2, incl. | 115 | 100 | 15 | 50 | 262 | 321 | A | |
4 | to 3, incl. | 135 | 120 | 13 | 45 | 269 | 341 | A | |
4 | over 3 to 6, incl. | 135 | 120 | 13 | 45 | 277 | 352 | A | |
4 | over 6 to 8, incl. | 135 | 120 | 13 | 45 | 285 | 363 | A | |
4 | over 8 to 9-1/2, incl. | 135 | 120 | 13 | 45 | 293 | 363 | D | |
3 | to 3, incl. | 145 | 130 | 12 | 40 | 293 | 363 | B | |
3 | over 3 to 8, incl. | 145 | 130 | 12 | 40 | 302 | 388 | B | |
3 | over 8 to 9-1/2, incl. | 145 | 130 | 12 | 40 | 311 | 388 | D | |
2 | to 7, incl. | 155 | 140 | 11 | 40 | 311 | 401 | B | |
2 | over 7 to 9-1/2, incl. | 155 | 140 | 11 | 40 | 321 | 415 | D | |
1 | to 6, incl. | 165 | 150 | 10 | 35 | 321 | 415 | C | |
1 | over 6 to 8, incl. | 165 | 150 | 10 | 35 | 331 | 429 | D | |
Grade B24V (4340 Mod.) | 3 | to 4, incl. | 145 | 130 | 12 | 40 | 293 | 363 | A |
3 | over 4 to 8, incl. | 145 | 130 | 12 | 40 | 302 | 375 | B | |
3 | over 8 to 11, incl. | 145 | 130 | 12 | 40 | 311 | 388 | C | |
2 | to 4, incl. | 155 | 140 | 11 | 40 | 311 | 388 | B | |
2 | over 4 to 8, incl. | 155 | 140 | 11 | 40 | 311 | 401 | C | |
2 | over 8 to 11, incl. | 155 | 140 | 11 | 40 | 321 | 415 | D | |
1 | to 4, incl. | 165 | 150 | 10 | 35 | 321 | 415 | C | |
1 | over 4 to 8, incl. | 165 | 150 | 10 | 35 | 331 | 429 | D | |
1 | over 8 to 11, incl. | 165 | 150 | 10 | 35 | 331 | 444 | D |
ASTM A540 Bolts Manufacturer, ASME A540 Bolts Supplier in India- ASME, DIN, AS, BS
Torq Bolt is a leading manufacturer and exporter of ASTM A540 Bolts in India. Our inventory includes astm a540 bolts in many grades including 12 point Bolts, threaded rod/bar, studs, double end studs, tap end studs, studbolts are readily available in all standard sizes and schedules.