Manufacturer & supplier of ASME SA 194 Gr.8 Nut Material in india
ASTM A194 Grade 8 Nuts belong to the specification for high pressure and high temperature services. Viha Steel & Forging is a leading manufacturer and supplier of the different types of ASME SA 194 Gr 8 Nut fasteners. The size of the nuts range from 2mm to 20mm and the diameters range from 4mm to 30mm. The ASTM A194 Grade 8 Heavy Hex Nuts are strong and they are used with high torque force for tightening them.
The material has carbon, manganese, silicon, phosphorus, sulfur, and 18% chromium with 8% nickel. The sa 194 gr b8 is made from 304 grade austenitic stainless steel. The chromium and nickel content of the material accounts for the high tensile strength and corrosion resistance. The minimum tensile strength of the SA 194 Gr 8MLCuN Nut and other fasteners is 550MPa and the minimum yield strength is 240MPa with 30% elongation rate and 223 BHN hardness value.
There are different types such as the ASTM A194 Gr. 8T Nut is used in petroleum, power generation, water supply and other domestic, commercial and industrial applications. The fasteners are strong and corrosion resistant even at elevated temperatures. The SA 194 Gr 8 Specification allows the fasteners to operate up to 450 degrees Celsius temperature. Please feel free to contact us for more information on the different types of fasteners and their prices.
- Standard: ASME/ANSI B18.2.2; DIN439
- Size: 1/4''–1-1/2’’; M6 – M42
- Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass
- Grade: ASTM A563 Gr. DH; SAE J995 Gr.5.8
- Thread: M, UNC, UNF
- Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
Material |
Specification |
Standards |
Size |
Length |
ASTM A194 Grade 8 Heavy Hex Nuts |
IS BS ASTM |
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160 |
3 mm to 200 mm |
Stud Bolt Grade |
ASTM A194 Nuts |
Washers |
L7 |
A194 Grade 4 or 7 |
F436 |
L43 |
A194 Grade 4 or 7 |
F436 |
B8 Class 1 |
A194 Grade 8 |
SS304 |
B8M Class 1 |
A194 Grade 8M |
SS316 |
B8 Class 2 |
A194 Grade 8 |
SS304 |
B8M Class 2 |
A194 Grade 8M |
SS316 |
B7 |
A194 Grade 2H |
F436 |
B7M |
A194 Grade 2HM |
F436 |
B16 |
A194 Grade 4 or Grade 7 |
F436 |
Call for small piece of SA 194 Gr 8 Nut Material to test before buying
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Astm A194 GR.8 Heavy Hex Nuts |
Astm A194 GR.8 Hex Nuts |
Astm A194 GR.8 Coupler Nuts |
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Astm A194 GR.8 Lock Nut |
Astm A194 GR.8 Nylon Insert Nut |
Astm A194 GR.8 Self Locking Nuts |
View latest price & ready sizes of SA 194 Gr 8MLCuN Nut Ex Mumbai
| Element | ASTM A194 GR.8 |
| Carbon | 0.08 max |
| Manganese | 2.00 Max |
| Phosphorus, max | 0.05% |
| Sulfur, max | 0.03% |
| Silicon | 1.00% max |
| Chromium | 18.0-20.0% |
| Nickel | 8.0-11.0% |
| Molybdenum | - |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 550 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 240 |
| Elongation in 4D (El) | 30 |
| Reduction | 40 |
| Hardness – (BHN) | 223 |
| ASTM A194 Grade 2 | Carbon steel heavy hex nuts |
|---|---|
| ASTM A194 Grade 2H | Quenched & tempered carbon steel heavy hex nuts |
| ASTM A194 Grade 2HM | Quenched & tempered carbon steel heavy hex nuts, 100% hardness tested |
| ASTM A194 Grade 4 | Quenched & tempered carbon-molybdenum heavy hex nuts (withdrawn in 2017) |
| ASTM A194 Grade 7 | Quenched & tempered alloy steel heavy hex nuts |
| ASTM A194 Grade 7M | Quenched & tempered alloy steel heavy hex nuts, 100% hardness tested |
| ASTM A194 Grade 7L | Quenched & tempered alloy steel heavy hex nuts, Charpy impact tested |
| ASTM A194 Grade 8 | Stainless AISI 304 heavy hex nuts |
| ASTM A194 Grade 8M | Stainless AISI 316 heavy hex nuts |
Available ASTM A194 Gr. 8T Nut stock, Always check SA 194 Gr 8 Specification
| Nuts Grade Identification Marking 5 | ASTM A194 Nuts Specification | ASTM A194 Nuts Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | |
|---|---|---|---|---|---|---|---|
| Min | Max | ||||||
 |
ASTM A194 Grade 2 Nuts | Medium Carbon Steel | 1/4 - 4 | 0 | 150 | 159 | 352 |
 |
ASTM A194 Grade 2H Nuts | Medium Carbon Steel, Quenched and Tempered | 1/4 - 4 | 850 | 175 | C24 | C38 |
 |
ASTM A194 Grade 2HM Nuts | Medium Carbon Steel, Quenched and Tempered | 1/4 - 4 | 1150 | 150 | 159 | 237 |
 |
ASTM A194 Grade 4 Nuts | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1100 | 175 | C24 | C38 |
 |
ASTM A194 Grade 7 Nuts | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1100 | 175 | C24 | C38 |
 |
ASTM A194 Grade 7M Nuts | Medium Carbon Alloy Steel, Quenched and Tempered | 1/4 - 4 | 1150 | 150 | 159 | 237 |
 |
ASTM A194 Grade 8 Nuts | Stainless AISI 304 | 1/4 - 4 | - | 80 | 126 | 300 |
 |
ASTM A194 Grade 8M Nuts | Stainless AISI 316 | 1/4 - 4 | - | 80 | 126 | 300 |
A194 Grade 8 Nut Material can be manufactured as required with short lead times.
| Element | 2, 2H, and 2HM | 4 | 7 and 7M (AISI 4140) | 8 (AISI 304) | 8M (AISI 316) |
|---|---|---|---|---|---|
| Carbon | 0.40% min | 0.40 - 0.50% | 0.37 - 0.49% | 0.08% max | 0.08% max |
| Manganese | 1.00% max | 0.70 - 0.90% | 0.65 - 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.040% | 0.035% | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.050% | 0.040% | 0.040% | 0.030% | 0.030% |
| Silicon | 0.40% max | 0.15 - 0.35% | 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 | 0.20 - 0.30% | 0.15 - 0.25% | 2.00 - 3.00% |
| Grade | Carbon | Manganese | Phosphorous, max | Sulfur, max | Silicon | Chromium | Nickel | Molybdenum | Other Elements |
|---|---|---|---|---|---|---|---|---|---|
| 2, 2H and 2 HM | 0.40% min. | 1.00% max. | 0.04% | 0.05% | 0.40% max | ||||
| 3 | 0.10% min. | 1.00% max. | 0.04% | 0.03% | 1.00% | 4.0-6.0% | 0.20-0.30% | ||
| 4 | 0.40 -0.50% | 0.70-0.90% | 0.035% | 0.04% | 0.15-0.35% | 0.20-0.30% | |||
| 6 | 0.15% | 1.00% | 0.04% | 0.03% | 1.00% | 11.5-13.5% | |||
| 6F | 0.15% | 1.25% | 0.06% | 0.06% | 1.00% | 12.0-14.0% | Selenium-0.15% min | ||
| 7 and 7M (AISI 4140) | 0.37-0.49% | 0.65-1.10% | 0.04% | 0.04% | 0.15-0.035% | 0.75-1.20% | 0.15-0.25% | ||
| 8 (AISI 304) | 0.08% | 2.00% max | 0.05% | 0.03% | 1.00% max | 18.0-20.0% | 8.0-11.0% | ||
| 8M (AISI 316) | 0.08% | 2.00% max | 0.05% | 0.30% | 1.00% max | 16.0-18.0% | 10.0-14.0% | 2.00-3.00% | |
| 8C | 0.08% | 2.00% | 0.045% | 0.03% | 1.00% | 17.0-19.0% | 9.0-12.0% | Columbium and Tantalum – 10x carbon content, min | |
| 8T | 0.80% | 2.00% | 0.045% | 0.30% | 1.00% | 17.0-19.0% | 9.0-12.0% | Titanium-0.70%max, Nitrogen-0.10% | |
| 8F | 0.15% | 2.00% | 0.20% | 0.15%min | 1.00% | 17.0-19.0% | 8.0-10.0% | ||
| 8R | 0.06% | 4.0-6.0% | 0.045% | 0.03% | 1.00% | 20.5-23.5% | 11.5-13.5% | 1.50-3.00% | Columbium and Tantalum-0.10-0.30%, Nirogen-0.20-0.40%, Vanadium-0.10-0.30% |
| 8S | 0.10% | 7.0-9.0% | 0.060% | 0.03% | 3.5-4.5% | 16.0-18.0% | 8.0-9.0% | Nitrogen-0.08-0.18% | |
| 16 | 0.36-0.47% | 0.45-0.70% | 0.035% | 0.40% | 0.15-0.35% | 0.80-1.15% | 0.50-0.65% | Vanadium-0.25-0.35%, Aluminum-0.015% |
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