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Suryadev QST Specifications

Chemical Composition - IS1786 : 2008

 Indian Standard Suryadev QST Specifications
Elements
Carbon, Max 
Sulphur, Max 
Phosphorous, Max 
S + P, Max 
Chromium Cr, Min 
Copper Cu, Min 
Silicon Si 
Fe 415  Fe 500 Fe 500 D
0.30 0.30 0.25
 0.060 0.055  0.040
0.060 0.055  0.040
0.110 0.105  0.075
- - -
- - -
- - -
SD 415 SD 500  SD 500 D SD HSCRS
0.23  0.23  0.23  0.17
0.045 0.040 0.035 0.040
0.055 0.055 0.040 0.100
0.110 0.095 0.070 0.130
- - - 0.400
- - - 0.350
- - - 0.350

Weight  Tolerance Chart 

Size of Bar ( mm2)  Cross Sectional Area (mm2)
IS 1786 
Lower Standard  Upper 
SURYADEV 
Lower Upper 
SURYADEV HSCRS
Lower Upper 
8
10
12
16
20
25
28
32
36
40
50.3
78.6
113.1
201.2
314.3
491.1
616.0
804.6
1018.30
1257.20
0.367 0.395 0.423
0.574 0.617 0.660
0.844 0.888 0.932
1.501 1.659 1.659
2.396 2.470 2.544
3.735 3.850 3.966
4.685 4.830 4.975
6.121 6.310 6.499
7.750 7.990 8.229
9.564 9.860 10.156
0.375 0.415
0.586 0.648
0.857 0.919
1.525 1.635
2.421 2.519
3.773 3.927
4.733 4.927
6.184 6.436
7.830 8.150
9.662 10.057
0.375 0.415
0.586 0.648
0.857 0.919
1.525 1.635
2.421 2.519
3.773 3.927
4.733 4.927
6.184 6.436
7.830 8.150
9.662 10.057

Mechanical Properties Elements – IS 1786 : 2008

Indian Standard Suryadev QST Specifications
Properties
Yield Strength, Min (N/mm2)
Ultimate Tensile Strength, Min (N/mm2)
Elongation, Min (As) (%)
Total Elongation, Min (Ag) (%)
Fe 415 Fe 500 Fe 500 D
415 500 500
485 545 565
14.5 12 16
- - 5
SD 415 SD 500 SD 500 D SD HSCRS
450 530 530 530
540 610 620 640
18-22 16-21 16-22 16-20
- - 6 -

Bend & Re-bend Properties

BEND Indian Standard Suryadev QST Specifications
Properties
Till 20 mm
Over 20 mm
Fe 415 Fe 500 Fe 500 D
3d 4d 3d
4d 5d 4d
SD 415 SD 500 SD 500 D SD HSCRS
3d 3d 3d 3d
4d 4d 4d 4d
RE - BEND Indian Standard Suryadev QST Specifications
Properties
Till 10 mm
Over 10 mm
Fe 415 Fe 500 Fe 500 D
5d 5d 4d
7d 7d 6d
SD 415 SD 500 SD 500 D SD HSCRS
5d 5d 4d 5d
6d 6d 6d 6d

Nominal Size mm Mandrial Diameter for different grades (IS 1786 : 2008)