quality control tmt steel bars

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TESTING OF TMT STEEL BARS: Lab: Dr. Uppal’s Testing & Analytical Laboratory (P) Ltd. SAIL 8mm,10mm,12mm & 25mm dia TMT steel bars three specimen of one mtr. Length each. MECHANICAL PROPERTIES: S. No. Parameters Results IS 1786 Limits 8mm 10mm 12mm 25mm 1. Yield / 0.2% P.S (N/mm2) 523.6 542.1 531.8 530.4 Min 500 2. Tensile Strength 642.1 658.7 655.0 649.5 Min 565 3. Elongation (%) 24.2 20.4 18.6 22.6 Min 16 4. Bend Test No cracks / No Rupture Shall have no cracks or rupture 5. RE – Bend Test No cracks / No Rupture Shall have no cracks or rupture 6. Grade of steel Fe – 500 D Fe – 500 D 7. % UTS / 0.2 % PS 22.6 21.5 23.2 22.5 Min. 10 CHEMICAL COMPOSITION : S.No. Parameters Results IS 1786 Limits 8mm 10mm 12mm 25mm 1. % Carbon (as C) 0.188 0.196 0.190 0.202 Max 0.250 2. % Sulphur (as S) 0.027 0.031 0.028 0.025 Max 0.040 3. % Phosphorus (as P) 0.031 0.033 0.025 0.026 Max 0.040 4. % Sulphur & Phosphorus 0.058 0.064 0.053 0.051 Max 0.075

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How the quality control is done at working site in case of TMT Steel Bars

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TESTING OF TMT STEEL BARS:Lab: Dr. Uppals Testing & Analytical Laboratory (P) Ltd.SAIL 8mm,10mm,12mm & 25mm dia TMT steel bars three specimen of one mtr. Length each.MECHANICAL PROPERTIES:S. No.ParametersResultsIS 1786 Limits

8mm10mm12mm25mm

1.Yield / 0.2% P.S (N/mm2)523.6542.1531.8530.4Min 500

2.Tensile Strength642.1658.7655.0649.5Min 565

3.Elongation (%)24.220.418.622.6Min 16

4.Bend TestNo cracks / No RuptureShall have no cracks or rupture

5.RE Bend TestNo cracks / No RuptureShall have no cracks or rupture

6.Grade of steelFe 500 DFe 500 D

7.% UTS / 0.2 % PS22.621.523.222.5Min. 10

CHEMICAL COMPOSITION :S.No.ParametersResultsIS 1786 Limits

8mm10mm12mm25mm

1.% Carbon (as C)0.1880.1960.1900.202Max 0.250

2.% Sulphur(as S)0.0270.0310.0280.025Max 0.040

3.% Phosphorus(as P)0.0310.0330.0250.026Max 0.040

4.% Sulphur & Phosphorus0.0580.0640.0530.051Max 0.075