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ASTM A193 B8 Bolt

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Grade A193 Flange Head Bolt, AISI 304 Grade B8 Allen Bolt, B8 Grade Stud Bolt, ASME SA193 Grade B8 U Bolt, ASTM A193 B8 Hex Head Bolt.

Usually copper along with molybdenum are never included in this grade composition of 304 Stainless steel. However, Grade B8M has a specific quantity of molybdenum along with copper. Furthermore, compared to the standard A198 Gr. B8 Allen bolts, a more comprehensive range of nitrogen concentration is allowed in Grade B8MLCuN.

While grade Gr B8 SA193 Anchor Bolts may have 0.08% carbon, the alloy for Grade B8M would contain a highest carbon element of 0.02%. This is another point of distinction. There are two grades of Grade B8 bolts on the market. Both classes go through a procedure known as solution annealing.

About ASTM A193 B8 Bolt

The ASTM a193 b8 threaded rod is often subjected to a strain hardening procedure in which alloy 304 is plastically deformed to harden the material. On the other hand, ASTM A193 B8 Class 1 Bolts’ mechanical qualities are enhanced by the solution annealing or carbide solution treatments. It is feasible to eliminate undesirable phases or carbides in the alloy used to make ASTM A193 B8 Heavy Hex Bolts by solution annealing.

Specification Of ASTM A193 B8 Bolt

DimensionsASME B18.2.1, B18.3
Melt OriginKorea, South America, Japan, East Europe,
Mandatory RequirementsFree from Mercury & Radioactive Contamination
Additional CertificationsPED 97/ 23/ EC Certified, Merkblatt AD 2000 W2 Certified
CertificationDual Certified As per ASTM & ASME Codes
Additional RequirementsNACE MR0103 / MR0175 / ISO 15156 Compliance
Threads ConfigurationASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads

Chemical Composition ASTM A193 B8 Bolt

ASTMC.Mn.Si.P.S.Cr.Ni.Mo.V.Ti.Brinell HardnessImpact Value
Grade B8
0.08 max.2.00 max.1.00 max.0.045 max.0.030 max.18.00---20.008.00---10.50---------223 B.H.N.

Mechanical Properties ASTM A193 B8 Bolt

GradeSizeTensile ksi, minYield, ksi, minElong, %, minRA % min
B8 Class 1All75303050
B8 Class 2Up to 3/41251001235
7/8 - 1115801535
1-1/8 - 1-1/4105652035
1-3/8 - 1-1/2100502845

Dimensions Of ASTM A193 B8 Bolt

Stainless Steel Bolts Dimensions Chart :

Nominal Size
or Basic

Full-Size Body
Width Across Flats,
Width Across
Corners, G
Head Height, H BasicRadius of
Fillet, R
Nominal Thread
Length for Bolt
MaxMinMaxMin6 in. and
6 in.
7⁄80.8750.8950.8521 5⁄161.3121.2691.5161.44737⁄640.6040.5310.060.0222.25
111.0220.9761 1⁄21.51.451.7321.65343⁄640.70.5910.
1 1⁄81.1251.1491.0981 11⁄161.6881.6311.9491.8593⁄40.780.6580.
1 1⁄41.251.2771.2231 7⁄81.8751.8122.1652.06627⁄320.8760.7490.090.032.753
1 3⁄81.3751.4041.3452 1⁄162.0621.9942.3822.27329⁄320.940.810.090.0333.25
1 1⁄21.51.5311.472 1⁄42.252.1752.5982.4811.0360.9020.
1 5⁄81.6251.6581.5912 7⁄162.4382.3562.8152.6161 3⁄321.1160.9780.
1 3⁄41.751.7851.7162 5⁄82.6252.5383.0312.8931 5⁄321.1961.0540.120.043.754
1 7⁄81.8751.9121.8392 13⁄162.8122.7193.2483.0991 1⁄41.2761.130.120.0444.25
222.0391.964332.93.4643.3061 11⁄321.3881.1750.
2 1⁄42.252.3052.2143 3⁄83.3753.2623.8973.7191 1⁄21.5481.3270.190.064.755
2 1⁄22.52.5592.4613 3⁄43.753.6254.334.1331 21⁄321.7081.4790.
2 3⁄42.752.8272.7114 1⁄84.1253.9884.7634.5461 13⁄161.8691.6320.190.065.756
333.0812.9614 1⁄24.54.355.1964.95922.061.8150.
3 1⁄43.253.3353.214 7⁄84.8754.7125.6295.3722 3⁄162.2511.9360.190.066.757
3 1⁄23.53.5893.4615 1⁄45.255.0756.0625.7862 5⁄162.382.0570.
3 3⁄43.753.8583.7265 5⁄85.6255.4376.4956.1982 1⁄22.5722.2410.190.067.758
444.1113.975665.86.9286.6122 11⁄162.7642.4240.

Different Types Of ASTM A193 B8 Bolt

Different Types Of Bolts

Application of ASTM A193 B8 Bolt

Testing of ASTM A193 B8 Bolt

Packing of ASTM A193 B8 Bolt

Destination Of ASTM A193 B8 Bolt

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