Visonalloys produces and manufactures ASTM A193 b8m bolts at effective costs. We deliver these bolts at best and defect-less conditions within specified time or earlier. We offer custom-made specifications of shapes, sizes, and dimensions to meet all the needs of the customers.
ASTM A193 b8m class 2 is a standard specification of SS 316 fasteners which are also available in wide-range of collectible forms such as bolts, screws, studs, threaded rods, washers, etc. ASTM A193 b8m bolts are used across elevated temperature atmospheres and for specific purposes where the tensile strength is highly required. ASTM A193 b8m bolts, by means of standard grade, are also used across pressure piping and pressure vessels including special purposes applications such as chemical industries, and oil and gas industries. Grade ASTM A193 b8m can be stress hardened and carbide mixture treated stainless steel that requires 100 ksi tensile strength and 50 ksi yield strength that have the maximum hardness range of 35 HRC or 321 HBW. ASTM A193 b8m specification covers all requirements of clients for the chemical composition, mechanical properties, heat-treatment, and hardness in specified time to all our esteemed clients. The chemical combination of ASTM A193 b8m bolt is comprises carbon less than 0.08%, manganese less than 2%, phosphorus less than 0.045%, silicon 1%, chromium up to 18%, nickel 10-24%, and 3% molybdenum.
Standards |
Designation |
|---|---|
ASTM |
A193 B8M: Class 1 Stainless Steel, AISI 316 |
Dimensions |
ASME B18.2.1, B18.3 |
|---|---|
Melt Origin |
South America/East Europe/JapanKorea/ |
Product Origin |
Made in India majorly Supplied. |
Threads Configuration |
ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
Certification |
Dual Certified As per ASTM & ASME Codes |
Additional Certifications |
PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
Mandatory Requirements |
Free from Mercury & Radioactive Contamination |
Additional Requirements |
NACE MR0103 / MR0175 / ISO 15156 Compliance |
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
**All measurements in millimeters**
NOMINAL SIZE (D) |
BODY DIAMETER |
HEAD THICKNEASTM A193 |
ACROASTM A193 THE FLATS |
ACROASTM A193 CORNERS |
||||
|---|---|---|---|---|---|---|---|---|
D (MAX) |
D (MIN) |
H (MAX) |
H (MIN) |
F (MAX) |
F (MIN) |
C (MAX) |
C (MIN) |
|
m10 |
10.00 |
9.78 |
6.63 |
6.17 |
17.00 |
15.73 |
18.48 |
17.77 |
m12 |
12.00 |
11.73 |
7.76 |
4.24 |
19.00 |
17.73 |
20.78 |
20.03 |
m14 |
14.00 |
13.73 |
9.09 |
8.51 |
22.00 |
20.67 |
24.25 |
23.35 |
m16 |
16.00 |
15.73 |
10.32 |
9.68 |
24.00 |
23.67 |
27.71 |
26.75 |
m20 |
20.00 |
19.67 |
12.88 |
12.12 |
30.00 |
29.16 |
34.64 |
32.95 |
m24 |
24.00 |
23.67 |
15.44 |
14.56 |
36.00 |
35.00 |
41.57 |
39.55 |
m30 |
30.00 |
29.67 |
19.48 |
17.92 |
46.00 |
45.00 |
53.12 |
50.85 |
m36 |
36.00 |
35.61 |
23.38 |
21.63 |
55.00 |
53.80 |
63.51 |
60.79 |
m42 |
42.00 |
41.38 |
26.97 |
25.03 |
65.00 |
62.90 |
75.06 |
71.71 |
m48 |
48.00 |
47.38 |
31.07 |
28.93 |
75.00 |
72.60 |
86.60 |
82.76 |
m56 |
56.00 |
55.26 |
36.2 |
33.80 |
85.00 |
82.20 |
98.15 |
93.71 |
m64 |
64.00 |
63.26 |
41.32 |
38.68 |
95.00 |
91.80 |
109.70 |
104.65 |
m72 |
72.00 |
71.26 |
46.45 |
43.55 |
105.00 |
101.40 |
121.24 |
115.60 |
m80 |
80.00 |
79.26 |
51.58 |
48.42 |
115.00 |
111.00 |
132.72 |
126.54 |
m90 |
90.00 |
89.13 |
57.74 |
54.26 |
130.00 |
125.50 |
150.11 |
143.07 |
m100 |
90.00 |
99.13 |
63.9 |
60.10 |
145.00 |
140.00 |
167.43 |
159.60 |
Chemical Composition
Typical compositional ranges for grade ASTM A193 B8M Bolts
Element |
B8M (AISI 316) |
|---|---|
Carbon |
0.08% max |
Manganese |
2.00% max |
Phosphorus, max |
0.045% |
Sulfur, max |
0.030% |
Silicon |
1.00% max |
Chromium |
16.0 – 18.0% |
Nickel |
10.0 – 14.0% |
Molybdenum |
2.00 – 3.00% |
Mechanical Properties
Typical mechanical properties for grade ASTM A193 B8M Bolts
Grade |
Size |
Tensile ksi, min |
Yield, ksi, min |
Elong, %, min |
RA % min |
HBW |
HRC |
|---|---|---|---|---|---|---|---|
B8M Class 1 |
All |
75 |
30 |
30 |
50 |
223 max |
96 max |
B8M Class 2 |
Up to 3/4 |
110 |
95 |
15 |
45 |
321 max |
35 max |
7/8 - 1 |
100 |
80 |
20 |
45 |
|||
1-1/8 - 1-1/4 |
95 |
65 |
25 |
45 |
|||
1-3/8 - 1-1/2 |
90 |
50 |
30 |
45 |
