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Construction TMT/QST Bars

Corrosion-resistant, earthquake resistant, ductile, and superior welding strength!

We produce FE500, FE500D, FE550D, CRS grades from 6mm to 32mm of wide range. We have “D” graded steel bars. TMR/QST bars having this grade mean more flexibility and strength. Our bars assure phenomenal quality in all types of building construction.

Chemical Properties - IS 1786:2008

Elements
Indian Standard ( 1786 : 2008 )
Polaad Specifications
Fe 500
Fe 500D
Fe 550
Fe 550D
500
500D
550
550D
Carbon, Max
0.30
0.25
0.30
0.25
0.25
0.25
0.25
0.25
Sulphur, Max
0.055
0.040
0.055
0.040
0.050
0.040
0.050
0.040
Phosphorus, Max
0.055
0.040
0.050
0.040
0.050
0.040
0.050
0.040
S + P, Max
0.105
0.075
0.100
0.075
0.095
0.075
0.095
0.075

Mechanical Properties - NES- IS 1786:2008

Elements
Indian Standard ( 1786 : 2008 )
Polaad Specifications
Fe 500
Fe 500D
Fe 550
Fe 550D
500
500D
550
550D
Yield Strength, Min (N/mm²)
500
500
550
550
530
530
580
580
Ultimate Tensile Strength, Min (N/mm²)
545
565
585
600
585
585
610
610
Elongation, Min (%)
12
16
10
14.5
16-20
18-22
16-20
18-22
UTS/YS Ratio
1.08
1.10
1.06
1.08
1.10
1.15
1.10
1.15

Weight Tolerance

Size (Dia)of bar(mm)
Cross
Sectional area (m2)
Section Wt. (Kg/m ) as
per IS1786
Polaad Section Wt. (Kg/m)
Length of Bar (m)
Weight of 1 Bar of Polaad (Kg)
No. Of Bars In 1 Bundle
Lower
Standard
Higher
Lower
Higher
Lower
Higher
6
28.30
0.206
0.222
0.238
0.211
0.233
12
2.531
2.797
30
8
50.30
0.367
0.395
0.423
0.375
0.415
12
4.503
4.977
17
10
78.60
0.574
0.617
0.660
0.586
0.648
12
7.034
7.774
11
12
113.10
0.844
0.888
0.932
0.861
0.915
12
10.336
10.976
8
14
153.95
1.148
1.209
1.269
1.175
1.209
12
14.1
14.5
6
16
201.20
1.501
1.580
1.659
1.533
1.627
12
18.391
19.529
4
18
254.50
1.940
1.998
2.058
1.950
1.998
12
23.4
23.976
3
20
314.30
2.396
2.470
2.544
2.421
2.519
12
29.047
30.233
3
25
491.10
3.735
3.850
3.966
3.733
3.927
12
45.276
47.124
2
28
615.80
4.685
4.830
4.975
4.733
4.927
12
56.801
59.119
1
32
804.60
6.121
6.310
6.499
6.184
6.436
12
740
77.234
1
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