Page 129 - Fundamental Of Design In Mechanical Engineering

Strength of welded joint

◦ Under the proper condition , all steel can be welded, but best result will
be obtained if steel having

1. UNS – Choose steel material specification between G10141 and

G10230. All these steel have a tensile strength in the hot rolled

condition in the range of 410 to 480 MPa.

2. AISC -The permissible stresses are now based on the yield strength of

material. ASTM Yield Strength of varying from 230 to 340 MPa

(S =0.5S )
u
y
Type of Loading Type of Weld Permissible N ( Factor of Safety)

Stress
Tension Butt 0.60S y 1.67

Bearing Butt 0.90S y 1.11
Bending Butt 0.60-0.66S y 1.52-1.67

Simple Butt 0.60S y 1.67
Compression

Shear Butt or 0.30S ut
Fillet

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