ASTM A193 Grade B7 Stud Bolts | UNS G41400 Specifications

ASTM A193 Grade B7 Stud Bolts

G41400

ASTM A193 Grade B7 Bolts are manufactured from 4140 Alloy Steel in accordance with ASTM A193 specification. Torqbolt is a prominent A193 gr B7 bolt supplier in India.

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ASTM A193 Grade B7 Stud Bolts Properties

ASTM A193 Grade B7 Stud Bolts Chemical Requirements

Ferritic Steels

Grade Description and
UNS Designation
C Mn P S Si Cr Mo V Al
ASTM A193 Grade B7 Cr-MoC 0.38-0.48D 0.75-1.00 0.035 0.040 0.15-0.35 0.80-1.10 0.15-0.25 . . . . . .
Product Analysis VariationB 0.02 0.04 0.005 0.005 0.02 0.05 0.02 . . . . . .

ASTM A193 Grade B7 Stud Bolts Mechanical Requirements

Ferritic Steels (Inch)

Grade Diameter, in. Minimum Tempering
Temperature,
°F
Tensile Strength, min, ksi Yield Strength, min, 0.2 %
offset, ksi
Elongation in 4D, min, % Reduction of Area, min, %Reduction of Area, min, % Hardness,
max
ASTM A193 Grade B7
Cr-Mo
2 1⁄2 and under 1100 125 105 16 50 321 HBW or 35 HRC
over 2 1⁄2 to 4 1100 115 95 16 50 321 HBW or 35 HRC
over 4 to 7 1100 100 75 18 50 321 HBW or 35 HRC

Ferritic Steels (Metric)

Class Diameter,
[mm]
Min.Tempering
Temp. °C
Tensile Strength,
min, MPa
Yield Strength,min,
.2% offset, MPa
Elongation in 4D,
min, %
Reduction of Area, min, % Hardness,
max
ASTM A193M Grade B7
Cr-Mo
M64 and under 593 860 720 16 50 321 HBW or 35 HRC
over M64 to M100 593 795 655 16 50 321 HBW or 35 HRC
over M100 to M180 593 690 515 18 50 321 HBW or 35 HRC

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