Hardness testing to ISO 6508-1
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Stainless steel A4-70 stud bolts are integral to various industrial and construction applications due to their exceptional strength and corrosion resistance. These bolts guarantee great quality and performance by following ASTM A193, ASME SA 193, and DIN 931 standards. Given their tensile strength of 700 MPa, the A4-70 grade fasteners are perfect for severe conditions. Mostly composed of chromium (16–18.5%), nickel (10–14%), molybdenum (2–3%), and carbon (up to 0.08%), these bolts provide great resistance to corrosive elements, especially in marine and chemical settings.
As a stainless steel A4 70 stud bolt manufacturer, we aim to create premium fasteners that satisfy strict industry criteria. Our manufacturing techniques guarantee that every stud bolt passes thorough quality and durability tests. As a leading stainless steel A4 70 stud bolt supplier in India, we use cutting-edge manufacturing technologies and premium raw materials to provide a4 70 fasteners that perform remarkably well in various uses, including offshore oil rigs, chemical plants, and power-generating facilities.
Specifications | ASTM F738M / ASME SF738M |
Diameter | 1/4"-3" Matric:M3 to M72 in length 3000mm |
Dimensions | DIN 975/976, ASME B18.2.1, B18.31.3, B16.5 |
DIN Standard | B.S. DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN916, DIN 7982, DIN 7985, DIN 913 |
UTS | NPT, UNS, UNF, UNC, UNEF, NPTF |
ISO | ISO 4033, ISO 4032, ISO 7380, ISO 4017, JIS standards |
Threads | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
Type | Cold Forged, Hot Forged, Bar Stock Machined, Bar Stock Milling |
Customers and purchasers requiring a4-70 stud bolts can rely on our knowledge and extensive range of products. There are several sizes and lengths of the a4 70 stainless steel bolt, which qualifies for many uses. Particularly against chlorides and other strong chemicals, detailed a4 70 bolt specifications include austenitic stainless steel with additional molybdenum for increased corrosion resistance. A4 70 bolts are made to satisfy the highest standards; hence, they are strong enough to resist long exposure to corrosive surroundings and severe situations.
The price of stainless steel A4-70 stud bolts can vary depending on the size, quantity, and specific requirements. On average, these bolts are priced between ₹50 to ₹150 per piece. As a leading stainless steel A4 70 stud bolt supplier in India, we ensure competitive pricing while maintaining the highest quality standards. Our bolts are readily available for prompt delivery, ensuring project timelines are met efficiently.
To preserve the high standards of our selection of industrial stud bolts, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of stud bolts.
Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | N | |
A4-70 | Minimum | - | - | - | - | - | 16.0 | 2.0 | 10.5 | - | - |
ISO | Maximum | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 18.5 | 3.0 | 14.0 | 1.0 | - |
A4-70 | Minimum | - | - | - | - | - | 16.0 | 2.0 | 11.5 | - | 0.12 |
ISO² | Maximum | 0.03 | 1.00 | 2.00 | 0.045 | 0.03 | 18.5 | 3.0 | 14.0 | 1.0 | 0.22 |
Grade | Tensile Stress (MPa) min | Yield Strength 0.2% Proof (MPa) min |
Elong (% in 50mm) min |
Hardness Rockwell B (HR B) max |
Brinell (HB) max |
---|---|---|---|---|---|
A4-70 | 700 | 450 | 40 | Not required | Not required |
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
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