Steel Material



The following is a characteristic of steel material, good mechanical properties, a tool for structural steel connections.

1. Mechanical Properties of SteelMechanical properties of structural steel used in the plan must meet the minimum requirements given in the Table below.

2. Yield stressYield stress for planning (fy) should not be taken exceed the values ​​given Table below.




3. Voltage dropVoltage drop for planning (fu) should not be taken exceed the values ​​given Table below.


4. Other mechanical propertiesOther mechanical properties of structural steel for planning purposes are as follows:

Modulus of elasticity: E = 200,000 MPaShear modulus: G = 80,000 MPaPoisson ratio: μ = 0.3Expansion coefficient: α = 12 x 10e-6 º C5. REQUIREMENTS steel

Material test reports of steel at the factory which was approved by the competent institution may be considered as sufficient evidence to meet the requirements set forth in this standard.
6. Steel unidentifiedThe unidentified steel may be used during the following provisions:
free of surface defectsphysical properties of materials and simplicity to be welded does not reduce the strength and ability to service its structuretested according to applicable regulations. Yield stress (fy) for planning should not be taken more than 170 MPa while the breakdown voltage (fu) should not be taken more than 300 MPa.







Grafting tools

1. Bolts, nuts, and ringBolts, nuts, and rings must meet regulatory requirements.


2. Tools high quality connectionTools high quality connection may be used if it fulfills the following conditions:
chemical composition and mechanical properties in accordance with applicable provisionsstem diameter, wide pivot bolt heads and nuts or replacement, must be greater than the nominal value specified in the applicable provisions. Other sizes may differhow withdrawals bolts and examination procedures for connecting devices may differ from the provisions for minimum tensile strength requirements are met and equipment continued its withdrawal procedure can be checked.3. Weld
Welding and metal welding material must comply with applicable regulations.

4. Type shear connectors are welded nailsAll types of shear connectors are welded nails should be in accordance with applicable regulations.

5. Anchor boltsAnchor bolts must comply with the provisions of Item or made from the stem during ulirnya meet compliance regulations.

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