Astm A320 Fasteners Manufacturers Suppliers Stockist India
Astm A320 Fasteners sizes, Astm A320 Bolts standard sizes, Astm A320 Fasteners sizes in mm, Astm A320 Bolts specification chart, Astm A320 Bolts strength chart, Astm A320 Bolts grades chart, Astm A320 Bolts dimensions chart, Bolts size chart metric, Astm A320 Fasteners size table, diameter chart, Standard Thread Lengths & specifications
ASTM A320 Nuts Washer
Originally approved in 1948, the ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature service. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts used for pressure vessels, valves, flanges, and fittings. Like the ASTM A193 specification, unless other wise specified, the 8UN thread series is specified on fastener larger than 1” in diameter.
Below is a basic summary of a few of the common grades within the ASTM A320 specification. A number of other less common grades of ASTM A320 exist, but not covered in the description below.
Grades
L7 Alloy steel
AISI 4140/4142 Quenched and tempered L43 Alloy steel
AISI 4340 Quenched and tempered 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
Mechanical Properties
Grade
Size
Tensile,
ksi, min
Yield,
ksi, min
Charpy Impact
20-ft-lbf
@ temp
Elong,
%, min
RA, %, min
L7 Up to 21 / 2 125 105 -150° F 16 50 L43 Up to 4 125 105 -150° F 16 50 B8
Class 1 All 75 30 N/A 30 50 B8M
Class 1 All 75 30 N/A 30 50 B8
Class 2 Up to 3 / 4 125 100 N/A 12 35 7 / 8 - 1 115 80 N/A 15 35 11 / 8 - 11 / 4 105 65 N/A 20 35 13 / 8 - 11 / 2 100 50 N/A 28 45 B8M
Class 2 Up to 3 / 4 110 95 N/A 15 45 7 / 8 - 1 100 80 N/A 20 45 11 / 8 - 11 / 4 95 65 N/A 25 45 13 / 8 - 11 / 2 90 50 N/A 30 45
Chemical Properties
Element
L7 (AISI 4140)
L43 (AISI 4340)
B8 (AISI 304)
B8M (AISI 316)
Carbon 0.37 - 0.49% 0.38 - 0.43% 0.08% max 0.08% max Manganese 0.65 - 1.10% 0.75 - 1.00% 2.00% max 2.00% max Phosphorus, max 0.035% 0.035% 0.045% 0.045% Sulfur, max 0.040% 0.040% 0.030% 0.030% Silicon 0.15 - 0.35% 0.15 - 0.35% 1.00% max 1.00% max Chromium 0.75 - 1.20% 0.70 - 0.90% 18.0 - 20.0% 16.0 - 18.0% Nickel 1.65 - 2.00% 8.0 - 11.0% 10.0 - 14.0% Molybdenum 0.15 - 0.25% 0.20 - 0.30% 2.00 - 3.00%
Recommended Nuts and Washers
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Astm A320 Fasteners sizes, Astm A320 Bolts standard sizes, Astm A320 Fasteners sizes in mm, Astm A320 Bolts specification chart, Astm A320 Bolts strength chart, Astm A320 Bolts grades chart, Astm A320 Bolts dimensions chart, Bolts size chart metric, Astm A320 Fasteners size table, diameter chart, Standard Thread Lengths & specifications Astm A320 Fasteners sizes, Astm A320 Bolts standard sizes, Astm A320 Fasteners sizes in mm, Astm A320 Bolts specification chart, Astm A320 Bolts strength chart, Astm A320 Bolts grades chart, Astm A320 Bolts dimensions chart, Bolts size chart metric, Astm A320 Fasteners size table, diameter chart, Standard Thread Lengths & specifications We Export to:
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United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus Our Clients in :
India United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus United Arab Emirates Kenya India Qatar United States Malaysia South Korea Indonesia Singapore United Kingdom India Japan China Thailand Taiwan Italy Iran Vietnam Poland Egypt Canada Turkey Sri Lanka Pakistan Saudi Arabia Kuwait Russia Nigeria France Denmark Germany Greece Ukraine Oman Switzerland South Africa Romania Colombia Iraq Australia Netherlands Portugal Spain Brazil Norway Paraguay Azerbaijan Trinidad & Tobago Mexico Hong Kong Philippines Tunisia Bahrain Serbia Belarus