A193 B8M Studbolt&A194 8 Nuts
Product description
1.Diameter:M2-M64
2.Length:10mm-5000mm
3.Material:4.8grade,5grade.6grade.8.8grade, A2-50,A2-70,A2-80,SS316L,AISI304,AISI316
4.Finish:plain,zinc plated,Hot dip galvanized
5.MOQ:100PCS
6.We have regular size in stock
B8 | Class 1 Stainless steel, AISI 304, carbide solution treated. |
---|---|
B8M | Class 1 Stainless steel, AISI 316, carbide solution treated. |
B8 | Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
B8M | Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened |
Test Report
1,Chemical composition of raw materials | |||||||||||||
C | Si | Mn | P | S | Cr | Ni | |||||||
Category | Material | Heat NO | Chemical | ||||||||||
Composition | |||||||||||||
SS304 | 130728C02 | Spec | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-10.5 | ||||
Bolt | Results | 0.047 | 0.35 | 1.12 | 0.034 | 0.011 | 18.24 | 8.05 | |||||
SS304 | 130728A02 | Spec | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-10.5 | ||||
Nut | Results | 0.037 | 0.32 | 1.02 | 0.036 | 0.014 | 18.21 | 8.10 |
2Mechanical properties of material of bolt | |||||||||||
σb | σ0.2 | δ4D | ψ | ||||||||
Project | Tensile strength(Mpa) | Yield strength(Mpa) | Elongation(%) | Shrinkage(%) | Hardness(HRC) | ||||||
spec | ≥723 | ≥448 | ≥20 | ≥35 | ≤HRC35 | ||||||
Results | 751 | 468 | 32.1 | 53.9 | 31 | ||||||
Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
---|---|---|---|---|---|
B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
2-5/8 - 4 | 115 | 95 | 16 | 50 | |
4-1/8 - 7 | 100 | 75 | 18 | 50 | |
B8 Class 1 | All | 75 | 30 | 30 | 50 |
B8M Class 1 | All | 75 | 30 | 30 | 50 |
B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
7/8 - 1 | 115 | 80 | 15 | 35 | |
1-1/8 - 1-1/4 | 105 | 65 | 20 | 35 | |
1-3/8 - 1-1/2 | 100 | 50 | 28 | 45 | |
B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
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 |
Element | B7 (AISI 4140) | B8 (AISI 304) | B8M (AISI 316) |
---|---|---|---|
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% |
Bolt Grade | Nuts | Washers |
---|---|---|
B7 | A194 Grade 2H | 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 |
Element | B7 (AISI 4140) | B8 (AISI 304) | B8M (AISI 316) |
---|---|---|---|
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% |
Bolt Grade | Nuts | Washers |
---|---|---|
B7 | A194 Grade 2H | 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 |
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