What is ASTM A193 b8 bolts ? can it be used in high-temperature applications?

A bolt which is widely recommended for use case in high pressure services is an ASTM A193 B8 bolts. It follows the material standard ASTM A193.
This standard mainly covers for the bolting materials which are stainless steel, in high pressure and temperature services.

Therefore, it means that you can use ASTM A193 gr B8 bolt in high temperature scenarios.
SA 193 gr B8 chemical composition comprises 0.38% carbon, 0.75% manganese, max 0.035% phosphorous, 0.040% sulphur, 0.8% chromium and 0.15%-0.25% molybdenum contents.

ASTM A193 B8 bolts

We are the number one manufacturer of class 1 ASME SA 193 b8 bolts at the most competitive prices in India.

Are there different packaging options available for SA 193 grade b8 hex bolt?

Customers also urge for the packaging options that are available for a ASME SA193 grade B8 hex bolts. Below are some of the ideal options that are available for this purpose:

  • Firstly, packaging of A193 B8 heavy hex bolts depends entirely upon the availability and the quantity demanded by the customer. Ideally, it comes in a box, securely sealed and then sent to them.
  • The packaging must be done in a way that it should not be damages. To avoid such situations, you can prefer boxes and bags, that mainly protect the products from scratches.
  • Fasteners are mainly known to be packed in bags that show tear-resistant behaviour.
  • Other than this, such packaging also provides cost affordability alternatives to the customers.

To know more about other relevant options, you can also refer to the A193 B8MLCuN stainless steel bolts specification. Many more resembling facilities are provided by us at Hiltonsteel, where we ensure that customers are aware of our functionality.

As a supplier, we specialise in providing SA193 grade b8 hex bolts in Mumbai that meet your exact specifications and regulatory requirements.

Specification of ASTM A193 b8 bolts
Sizes in Metric Sizes in Inch Imperial Threads
M2 – M152 ¼ – 8 inch BSW, ASME, BSF
Metric Threads Application Tensile Classes
ISO, ASME general-purpose industrial bolting application Class1, Class2, Class 2B
Standards Of Thread
ISO 268, ISO 68-1, ASME B1.1, ISO 724, BS 84, ASME B1.13M, BS 3643

 

price of bolts ASTM A193 b8
Size Price Export to Estimated delivery days from India
1/2 inch US $30.88 USA 40-60
M12 * 1000 mm US $ 11.35 Uk 30
Dia: 3 * 950 mm US $7.49 France 30
1/2 inch US $21.78 Italy 30
1.1/8 * 240 mm US $10.45 Taiwan  15
Dia: 3 * 550 mm US $9.51 Malaysia 10
1.3/4 * 400 mm US $11.45 Maldives  7
Dia: 3 * 550 mm US $10.33 Bangladesh  14
5/8 * 135 mm US $9.34 Argentina  45
7/8 * 225 mm US $5.64 Mayanmar  25
1.1/4 * 285 mm, US $8.62 Brazil  45-60
1.3/4 * 165 mm US $7.65 Cambodia 9
Dia: 3 * 325 mm US $7.35 Chile  45
1.1/2 * 355 mm US $8.51 Bolivia  45
1.3/4 * 425 mm US $8.37 Venezuela  45
1.1/4 * 260 mm US $8.75 Ecuador  60
Dia: 3 * 775 mm US $7.40 Paraguay  60
1.3/4 * 525 mm US $8.13 Colombia  45
Dia: 3 * 350 mm US $7.34 Guyana  60
ASTM A193 B8 Vs B8M

The main difference between ASTM A193 B8 class 1 bolts and B8M bolts lie in their ability to resist corrosion.
When viewed from the chemical composition point of view, you would see that ss 304 is used for making a ASTM A193 grade B8 bolts.

This means that it comprises less nickel content, hence they cannot resist corrosive environments; because of the composition of bolts B8M from stainless steel 316; which comparatively have higher nickel contents.
More the contents of nickel, in addition to chromium, more corrosion resistant behaviour it exhibits to industrial needs and standards.

ASTM A193 grade b8 bolts

ASTM A193 grade b8 bolts

ASME SA193 gr b8 hex bolts

ASME SA193 gr b8 hex bolts

B8 screws

B8 screws

As stockist, we provide and carry b8 screws with sizes ranging from ¼” to 8″ and threads including ISO, ASME, BSW, BSF

What are various types of A193 b8 Material

ASTM A193 b8 material

ASTM A193 b8 material

A193 gr. b8 socket head cap screws

A193 gr. b8 socket head cap screws

  • Inch: ¼” to 8″
  • Metric: M6 to M152
  • Thread:BSW, ASME, ISO, BSF

B8 stainless steel bolts

B8 stainless steel bolts

  • Automobile industry
  • Offshore industries
  • structural steel works
Standards of ASTM A193 b8
Product ISO UNI DIN ASME
Metric Imperial
Set Screws 4029 5929 916 B18.3.1M B18.3
Hex Bolts 4014 5737 931 B18.2.3.5M B18.2.1
Hex Cap Screws 4017 5739 933 B18.2.3.1M B18.2.1
Heavy Hex Bolts 7412 5712 6914 B18.2.3.7M B18.2.1
Socket Head Cap Screws 4762 5931 912 B18.3.1M B18.3
Countersunk Screws 10642 5933 7991 B18.3.1M B18.3
Dimensions of ASME SA193 grade b8 hex bolts
NS (D) Across The Flats Thickness of Head Body Diameter Across the Corners
Force (minimum) Force (maximum) Head (minimum) Head(maximum) Dia (minimum) Dia(maximum) Corner (minimum) Corner (maximum)
m12 17.73 19.00 4.24 7.76 11.73 12.00 20.03 20.78
m90 125.50 130.00 54.26 57.74 89.13 90.00 143.07 150.11
m10 15.73 17.00 6.17 6.63 9.78 10.00 17.77 18.48
m20 29.16 30.00 12.12 12.88 19.67 20.00 32.95 34.64
m16 23.67 24.00 9.68 10.32 15.73 16.00 26.75 27.71
m14 20.67 22.00 8.51 9.09 13.73 14.00 23.35 24.25
m24 35.00 36.00 14.56 15.44 23.67 24.00 39.55 41.57
m36 53.80 55.00 21.63 23.38 35.61 36.00 60.79 63.51
m30 45.00 46.00 17.92 19.48 29.67 30.00 50.85 53.12
m42 62.90 65.00 25.03 26.97 41.38 42.00 71.71 75.06
m56 82.20 85.00 33.80 36.2 55.26 56.00 93.71 98.15
m48 72.60 75.00 28.93 31.07 47.38 48.00 82.76 86.60
m72 101.40 105.00 43.55 46.45 71.26 72.00 115.60 121.24
m64 91.80 95.00 38.68 41.32 63.26 64.00 104.65 109.70
m80 111.00 115.00 48.42 51.58 79.26 80.00 126.54 132.72
m100 140.00 145.00 60.10 63.9 99.13 90.00 159.60 167.43
We can assist you if you require ASTM A193 b8 bolts stock to meet the requirements of your project, You can view the various A193 b8 material varieties that are currently available here.
Recommended hardware for A193 gr. b8 fasteners
Bolt Grade Washers Nuts
B8 Class 1 SS304 A194 Grade 8
B8 Class 2 SS304 A194 Grade 8
ASTM A193 b8 bolt torque chart
TORQUE NEWTON-METER
Bolt
Diameter
Torque 70% Initial
Torque 30%
Final
Torque 100%
1/2 49 22 71
9/16 72 31 102
1 338 145 483
1⅛ 403 172 575
7/8 225 96 321
5/8 99 42 141
565 243 808
778 334 1113
3118 1337 4454
19/16 531 228 759
1⅜ 590 252 843
3/4 175 75 249
761 325 1086
1⅝ 603 259 862
1⅞ 944 404 1348
1673 717 2389
2 1157 496 1653
2317 994 3311
3 4078 1748 5826
TORQUE FOOT-POUND FORCE -LBS
Bolt
Diameter
Torque 70% Initial
Torque 30%
Final
Torque 100%
9/16 53 23 75
3/4 129 55 184
1 249 107 356
1⅛ 297 127 424
7/8 166 71 237
1/2 36 16 52
1⅜ 435 186 622
1⅞ 696 298 994
2300 986 3285
417 179 596
5/8 73 31 104
1⅝ 445 191 636
19/16 392 168 560
3 3008 1289 4297
2 853 366 1219
574 246 821
1709 733 2442
561 240 801
1234 529 1762
Heat treatment of B8 screws
Class Heat Treatment Procedure
Class 2 Strain Hardened and Carbide Solution Treatment
Class 1 Treatment of Carbide Solution
Class 2B Strain Hardened and Carbide Solution Treatment
Marking of ASTM A193 grade b8 bolts
Marking Class
Manufacturer’s Logo & “B8SH” Grade Marking Class 2
Manufacturer’s Logo & “B8” Grade Marking Class 1
Manufacturer’s Logo & “B9” Grade Marking Class 2B
We offer A193 gr. b8 socket head cap screws and washer with Mill TC at the most competitive costs with rapid delivery. Review sa 193 gr b8 chemical composition & other properties
SA 193 gr b8 chemical composition
Mn C S P Fe Si Ni Cr Mo Cu N W
Min 8.0 18.0
Max 2.0 0.08 0.030 0.045 Bal 1.0 11.0 20.0
ASTM A193 b8 equivalent material
A193 B8 Classes
304 Class 2 and Class 1
Mechanical properties of SA193 b8

Inch Products

Diameter Class Reduction of Area, min, % Yield Strength, min, ksi Tensile Strength, min, ksi Elongation in 4D min, % Max Hardness
3/4 and under 2 35 100 125 12 35 HRC 321 HBW
Over 1 – 1 1/4 35 65 105 20
Over ¾ – 1 35 80 115 15
Over 1 1/4 – 1 1/2 45 50 100 28
All Dia. 1 50 30 75 30 96 HRB 223 HBW
2 and under 2B 40 75 95 25 35 HRC 321 HBW
Over 2 – 2 1/2 40 65 90 30
Over 2 1/2 – 3 40 55 80 30

Metric Products

Class Diameter Reduction of Area, min, % Yield Strength, min, ksi Tensile Strength, min, ksi Elongation in 4D min, % max hardness
2 Over M30 – M36 45 345 690 28 35 HRC 321 HBW
Over M20 – M24 35 550 795 15
M20 and under 35 690 860 12
Over M24 – M30 35 450 725 20
1 All Dia. 50 205 515 30 96 HRB 223 HBW
2B M48 and under 40 515 655 25 35 HRC 321 HBW
Over M64 – M72 40 380 550 30
Over M48 – M64 40 450 620 30
What are the strength and hardness ratings of SA 193 gr b8 socket head cap screws?

A198 Gr. B8 socket head cap screws are known to exhibit the hardness ratings and strength characteristics into two different property classes, which are as follows:
Property class one: Class 1 material

  • Excellent tensile strength characteristics with the value being 75 ksi.
  • It also shows good yield strength of 30 ksi.
  • Other than this it shows maximum 96 HRB hardness.

Property class two: A193 B8 Class 2 Material

  • Shows tensile strength value of 125 ksi.
  • Appreciating yield strength is shown by this material; value being 100 ksi.
  • Shows 321 HBW maximum hardness.
What are the top 8 applications of ASTM A193 grade b8 anchor bolts?

SA193 B8 Studs are widely used by industrial standards. Below are some of the industries that demand for them:

  • Chemical applications, where resistance to corrosion is a must factor. Appreciating corrosion resistance is show when one uses B8 bolts.
  • Shipbuilding processes, where temperature tolerance and hardness is needed.
  • Power plants, which require high pressure condition tolerance. With the two classes of tensile strength, it is clear that it shows excellent strength characteristics.
  • Fertilization process also aspire for such bolts.
  • Cement applications make use of such bolts to handle stress related situations. To avoid wear and tear, it is essential for its use case.
  • Oil and gas industries, where usually the temperature conditions and pressure conditions are high. This bolt makes sure that no degraded properties are seen, hence industries demand for it.
  • For elevated temperatures, we would require this bolt in petrochemical industries.
  • Sugar industry also aspire for such bolts, for their industrial applications.
Are b8 stainless steel bolts corrosion-resistant?

Because A193 gr B8 bolts are composed and manufactured from stainless steel 304, they offer excellent resistance to corrosion. This is because they comprise nickel and chromium contents in higher amounts in the chemical mixture.
Adding to this, most of the oxidizing acids are also resisted by ASME SA193 B8 nuts.