Visonalloy is the best supplier and manufacturer for ASTM A193 B8T Bolts. We are a traditional firm who takes care of every precision and uses only modern and effective tools and techniques to make them one among the best bolts over various environments.
ASTM A193 standard specification of steel covers various applications such as pressure vessels, heat-treating components, and valves like others. ASTM A193 B8T Bolts are applicable under high temperature and pressure environments, and also for few special purpose applications. We have a wide-range of collections of these austenitic steel bolts. Some of them are as follows: SS B5, SS B6, SS B7, SS B8, B8M, etc. ASTM A193 B8T Bolts selection is made upon the environment condition, service condition, mechanical properties, and high temperature resistance of the alloy. We offer B8T class 1 AISI 321 Stainless Steel which is carbide solution treated and b8t class 2 AISI 321 SS which is not only carbide solution treated but also strain hardened. The chemical mixture within ASTM A193 B8T Bolts consists of Maganese 1%, phosphorus less than 0.045%, sulphur up to 0,03%, silicon up to 1%, and rest of the 0.65% of molybdenum all maintain the chemical nature of the ASTM A193 B8T Bolts over different environments. Contact us for more.
Grade | Stainless Steel ASTM A193 B8T |
Specifications | ASTM A193 DIN, ASTM, BS and all International Standards |
Length | 3mm to 200mm |
Size | M 02 to M 160, Custom Sizes |
Form | Nuts, Bolts, Washers, Screw |
Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners etc. |
For Bolts & Screws: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H
For Nuts: A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040
For SHCS: F837B, F837C, F837E, F837
For Threaded Rods: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2
Chemical Composition
Typical compositional ranges for grade ASTM A193 B8T Bolts
Element | B7 | B8 | B8M |
Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
Phosphorus, max | 0.035% | 0.045% | 0.045% |
Sulfur, max | 0.040% | 0.030% | 0.030% |
Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
Mechanical Properties
Typical mechanical properties for grade ASTM A193 B8T Bolts
Grade B8T, Class 2 | M20 and under | 860 | 690 | 12 | 35 | 321 HBW or 35 HRC |
Grade B8T, Class 2 | M20 to M24, inclusive | 690 | 550 | 20 | 45 | 321 HBW or 35 HRC |
Grade B8T, Class 2 | M24 to M30, inclusive | 655 | 450 | 25 | 45 | 321 HBW or 35 HRC |
Grade B8T, Class 2 | M30 to M36, inclusive | 620 | 345 | 30 | 45 | 321 HBW or 35 HRC |
Grade B8T, Class 1 | All Diameters | 515 | 205 | 30 | 50 | 192 HVW or 90 HRB |