Product Specification,
sizes & weight


Mechanical Properties

Nominal Cross-Sectional Area & Mass

Sl No. Nominal Size mm Cross-Section Area mm2 Mass per Meter Kg.
1) 4 12.6 0.099
2) 5 19.6 0.154
3) 6 28.3 0.222
4) 8 50.3 0.395
5) 10 78.6 0.617
6) 12 113.1 0.888
7) 16 201.2 1.58
8) 20 314.3 2.47
9) 25 491.1 3.88
10) 28 615.8 4.83
11) 32 804.6 6.31
12) 36 1081.3 7.99
13) 40 1257.2 9.86
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Mechanical Properties of High Strength Deformed Bars and Wires (Clause 8.1)

Property Fe-415 Fe-415 D Fe-415 S Fe-500 Fe-500 D Fe-500 S Fe-550 Fe-550 D Fe-600
i) 0.2 percent proof stress, yield stress, Min, N/mm2 415.0 415.0 415.0 500.0 500.0 500.0 550.0 550.0 600.0
ii) 0.2 percent proof stress/yield stress, Max, N/mm2 540.0 625.0
iii) TS/YS ratio0, N/mm2 ≥1.10, but TS not less than 485.0 N/mm2 ≥1.12, but TS not less than 500.0 N/mm2 1.25 ≥ 1.08, but TS not less than 545.0 N/mm2 ≥1.10, but TS not less than 565.0 N/mm2 1.25 ≥1.06, but TS not less than 585 N/mm2 ≥1.08, but TS not less than 600.0 N/mm2 ≥1.06, but TS not less than 660 N/mm2
iv) Elongation , percent, Min of gauge length 5.65√A, where A is the cross-sectional area of the test piece. 14.5 18.0 20.0 12.0 16.0 18.0 10.0 14.5 10.0
v) Total elongation at maximum force, percent, Min, on gauge length 5.65√A, where A is the cross-sectional area of the test piece. (see3.9)2 5 10 5 8 5
I) TS/YS ratio refers to ratio of tensile strength to the 0.2 percent proof stress or yield stress of the test piece
II)Test wherever specified by the purchaser

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Mandrel Diametre for best test

SI No. Nominal Size (mm) Fe-415 Fe-415 D Fe-415 S Fe-500 Fe-500 D Fe-500 S Fe-550 Fe-550 D Fe-600
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)

i)

Up to and including 20












ii)

Over 20











Note: Ø is the nominal size of the test piece, in mm
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The maximum diameter of the mandrel shall be as given below:

Nominal Size of specimen Maximum Dia of Mandrel for
Fe- 415 & Fe- 500
Maximum Dia of Mandrel for
Fe- 415 D, Fe-415 S, Fe- 500 D and Fe-500 S
Maximum Dia of Mandrel for
Fe- 550 & Fe- 600
Maximum Dia of Mandrel for
Fe- 550 D
Up to and including 10mm
Over 10 mm



Note: Ø is the nominal size of the test piece, in mm
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Tolerance and Nominal Mass

Nominal Size Tolerance on the Nominal Mass, Percent Individual Sample for Coils only (2)
  Batch Individual Sample (1)
Up to and including 10 ± 7 -8 ± 8
Over 10 up to and including 16 ±5 -6 ± 6
Over 16 ± 3 -4 ± 4

(1) For individual sample plus tolerance is not specified. A single sample taken from a batch as individual sample.
(2) For coils batch tolerance is not specified.

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Chemical Properties

Chemical Composition

Constituent Fe-415 Fe-415 D Fe-500 Fe-500 D Fe-500 Fe-500 D Fe-600
Carbon 0.30 0.25 0.30 0.25 0.30 0.25 0.30
Sulphur 0.060 0.045 0.055 0.040 0.055 0.040 0.040
Phosphorus 0.060 0.045 0.055 0.040 0.050 0.040 0.040
Sulphur & Phosphorus 0.110 0.085 0.105 0.075 0..100 0.075 0.075

NOTES : For guaranteed weldability, the Carbon Equivalent, CE using the formula
chemical
Shall not be more than 0.53 percent, when microalloys / low alloys are used. When microalloys / low alloys are not used, carbon equivalent using the formula.
chemical
Shall not be more than 0.42 percent. Reinforcement bars / wires with carbon equivalent above 0.42 percent should, however be welded with precaution. Use of low hydrogen basic coated electrodes with matching strength bars / wires is recommended.

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Permissible Variations from the limits

Constituent Variations, Over Specified maximum Limit Percent, max
Carbon 0.02
Sulphur 0.005
Phosphorus 0.005
Sulphur & Phosphorus 0.010
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