ASTM A320 Grade L7M Bolts
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Boltport Fasteners supplies a wide range of ASTM A320 Grade L7M Bolts, which we procure and offer to our clients’ are made as per the industry standards. Moreover, we have gained appreciation amongst the industry, as we offer a quality tested array of ASTM A320 Grade L7M Alloy Steel Bolts. Thus, our professional team members have immense domain knowledge & expertise to make ASME SA 320 Grade L7M AS Bolts that helps us to achieve great quality standards on quality front. Our ranges of ASTM A320 Grade L7M Alloy Steel Bolts are used in different industries like cement, refineries, steel, etc. For keeping the developed ASME SA 320 Grade L7M AS Bolts in a secure manner, we have maintained a capacious warehousing unit.
ASTM A320 Grade L7M Bolts
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ASTM A320 Grade L7M Bolts Specifications
| Thread Diameters | : | M6 to M36 |
| Threads Configuration | : | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service | : | The ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwise specified, the 8UN thread series is specified on fastener larger than 1” in diameter. |
| Element | L7M (AISI 4140) | L43 (AISI 4340) | B8 (AISI 304) | B8M (AISI 316) |
| Carbon | 0.37 – 0.49% | 0.38 – 0.43% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 0.75 – 1.00% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.04% | 0.04% | 0.05% | 0.05% |
| Sulfur, max | 0.04% | 0.04% | 0.03% | 0.03% |
| Silicon | 0.15 – 0.35% | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 0.70 – 0.90% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 1.65 – 2.00% | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 0.20 – 0.30% | 2.00 – 3.00% |
| Grade | Size | Tensile, ksi min | Yield, ksi, min | Charpy Impact | Elong, % min | RA, %, min |
|---|---|---|---|---|---|---|
| L7M | up to 21/2 | 125 | 105 | -150° F | 16 | 50 |
| L43 | sup a 4 | 125 | 105 | -150° F | 16 | 50 |
| B8 Class 1 | all | 75 | 30 | N/A | 30 | 50 |
| B8M Class 1 | all | 75 | 30 | N/A | 30 | 50 |
| B8 Class 2 | Up to 3/4 | 125 | 100 | N/A | 12 | 35 |
| 7/8 – 1 | 115 | 80 | N/A | 15 | 35 | |
| 11/8 – 11/4 | 105 | 65 | N/A | 20 | 35 | |
| 13/8 – 11/2 | 100 | 50 | N/A | 28 | 45 | |
| B8M Class 2 | Up to 3/4 | 110 | 95 | N/A | 15 | 45 |
| 7/8 – 1 | 100 | 80 | N/A | 20 | 45 | |
| 11/8 – 11/4 | 95 | 65 | N/A | 25 | 45 | |
| 13/8 – 11/2 | 90 | 50 | N/A |
ASTM A320 Grade L7M Heavy Hex Bolts Manufacturer, ASTM A320 Grade L7M Alloy Steel Bolts Exporter, ASTM A320 Hex Bolts, ASTM A320 Grade L7M Structural Bolts Dealer in Mumbai, A320 Grade L7M Bolts Manufacturer in Mumbai.
ASTM A320 Grade L7M Alloy Steel Bolts has a low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance to stress-corrosion cracking in most freshwaters, and its resistance to a variety of corrosive conditions led to its wide use in marine applications and other non - oxidizing chloride solutions. ASME SA 320 Grade L7M SS Bolts is also used in Effluent scrubbing systems, Marine and other high chloride environments. To meet diversified needs of our esteemed clients all over the world, we are offering a vast range of ASTM A320 Grade L7M Alloy Steel Bolts, which is manufactured according to the market standards by utilizing high quality material & modern techniques.
ASTM A320 Grade L7Molt Application Industry
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