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ഹാർഡ്‌വെയർ വിതരണക്കാരൻ a320 b8m സ്റ്റഡ് ബോൾട്ട്

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നമ്പർ 51-പൂർണ്ണ ത്രെഡ്ഡ് ഹെക്സ് ബോൾട്ട്, നട്ട്, വാഷറുകൾ. A193 GR B8C, B8T, B8M

സവിശേഷതകൾ


A320 B8M stud bolt
Oxid black, Hot dip galvanized, Cad-plated, Blue PTFE Coated(Blue XYLANE 1014,1424),Teflon

സ്റ്റാൻഡേർഡ്DINANSI/ASMEGBJISNON-STANDARD
വലുപ്പംDia. M5-M100,1/4 above
മെറ്റീരിയൽMaterial Stainless steel, Duplex Steel
ഗ്രേഡ്A2-70,A4-70,A4-80,B8,B8M, B8 Cl2, B8M Cl2
പൂർത്തിയാക്കുകPlain, Y.Z.P., Black, Z.P.HDG  plated,PTFE,CAD PLATED
സർട്ടിഫിക്കറ്റ്ISO9001:2008 , TS16949
പേര്   A193/A320 B8,B8M

ASTM A193

Scope

Originally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature or high pressure service. This specification includes fasteners intended for use in pressure vessels, valves, flanges, and fittings. Although, this material is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters above one inch.

Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other standard specifications not covered in this description including B5, B6, and B16.

Recommended coating,

Oxid black, Hot dip galvanized, Zinc plated, Cad-plated, Blue TPFE Coated(Blue XYLANE 1014,1424), Green TPFE Coated(Green XYLANE 1014,1424).FEFLON coated

Grades

B7

Alloy steel, AISI 4140/4142 quenched and tempered
B8

Class 1 Stainless steel, AISI 304, carbide solution treated.

B8MClass 1 Stainless steel, AISI 316, carbide solution treated.
B8Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
B8MClass 2 Stainless steel, AISI 316, carbide solution treated, strain hardened

മെക്കാനിക്കൽ പ്രോപ്പർട്ടികൾ


ഗ്രേഡ്വലുപ്പംTensile ksi, minYield, ksi, minElong, %, minRA % min
B7Up to 2-1/21251051650
2-5/8 - 4115951650
4-1/8 - 7100751850
B8 Class 1All75303050
B8M Class 1All75303050
B8 Class 2Up to 3/41251001235
7/8 - 1115801535
1-1/8 - 1-1/4105652035
1-3/8 - 1-1/2100502845
B8M Class 2Up to 3/4110951545
7/8 - 1100802045
1-1/8 - 1-1/495652545
1-3/8 - 1-1/290503045

Chemical Properties


ഘടകം

B7 (AISI 4140)B8 (AISI 304)B8M (AISI 316)
Carbon0.37 - 0.49%0.08% max0.08% max
Manganese0.65 - 1.10%2.00% max2.00% max
Phosphorus, max0.035%0.045%0.045%
Sulfur, max0.040%0.030%0.030%
Silicon0.15 - 0.35%1.00% max1.00% max
Chromium0.75 - 1.20%18.0 - 20.0%16.0 - 18.0%
നിക്കൽ8.0 - 11.0%10.0 - 14.0%
Molybdenum0.15 - 0.25%2.00 - 3.00%

Recommended Nuts and Washers


Bolt Grade

പരിപ്പ്വാഷറുകൾ
B7A194 Grade 2HF436
B8 Class 1A194 Grade 8SS304
B8M Class 1A194 Grade 8MSS316
B8 Class 2A194 Grade 8SS304
B8M Class 2A194 Grade 8MSS316

 

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