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Wires for Concrete Reinforcement (Indian Standard)

 

CHEMICAL COMPOSITION

Constituent

Maximum Percentage

.

SAIL
TMT415

Fe
415

SAIL
TMT
500

Fe
500

SAIL
TMT
550

Fe
550

SAIL-TMT
HCR(Fe415/ 500/ 550)
Carbon 0.25 0.30 0.25 0.30 0.25 0.30

0.20

Sulphur 0.05 0.06 0.05 0.055 0.05 0.055 0.045

Phosphorus

0.05 0.06 0.05 0.055 0.05 0.050 0.045
Sulphur andPhosphours 0.10 0.11 0.10 0.105 0.10 0.10 0.09
Corrosion
Resistant
Elements
- - - - - -

0.75min

Carbon Equivalent - - - - - - 0.53 max

                                        

MECHANICAL PROPERTIES
Property                                                                       Grade
. Fe 415 SAIL
TMT
415
Fe
500
SAIL
TMT
500
Fe
550
SAIL
TMT
550
0.2 per cent proof stress/
yield stress, Min N/mm.sq.
415 415 500 500 550 550
Elongation per cent,Min,on gauge length 5.65 sqrt( A) where A is the cross sectional area of the test piece 14.5 22(upto
28 mm dia) 20(Above   28 mm dia)
12 20(upto28 mm dia) 18
(Above 26 mm dia)
8 18(upto
25 mm dia)
16 (Above28
mm dia)
Tensile
Strength, Min
10% more
than the actual0.2%
proofstress
but not less
than 485
N/mm²
10% more than the actual0.2% proofstress
but not less than 500  N/mm²
8% more
than the
actual0.2%
proofstress but not less than 545  N/mm²
8% more than the actual0.2% proofstress but not less than 580 N/mm² 6% more
\than the
actual0.2%
proofstress
but not less
than 585
N/mm²
6 % more
than the
actual0.2%
proofstress
but not less
than 630
N/mm²
. . .

(Upto 28 mm dia.) & 560N/mm²     (above28 mm dia.)

( Upto 28 mm dia.) & 560N/mm²
(above 28mm dia.)

......            .


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