DOCUMENT CODE: TS 1-08EDITION: I PAGE: 1 of 10

QUALITY MANAGEMENT SYSTEM CONFIDENTIALITY:p.t. STATUS (COPY NO.):

AUTHOR : Aleksej Ermolaev, Manager of Quality Management Department SIGNATURE:

CONTROLED BY: Aleksej Ermolaev, Representative of Quality Management SIGNATURE:

APPROVED BY :Bojan Zečević, Zamenik GD za proizvodnjuSIGNATURE:

DATE:. 10.04. 2008. SUPERIOR DOCUMENT: P-05

Technical (construction) specification of the steel rebars and plain barsfor the reinforcement of concrete

of the Metalfer Steel Mill productionTS 1-08

CHANGE NO.: APPROVED BY: DATE CHANGE NO.: APPROVED BY: DATE:

1 A.Ermolaev 20.08.2008

2 A.Ermolaev 29.12.2008

3 I. Romandić 09.12.2010

1. General demandsSpecification covers weldable steel rebars and wire rod for concrete armouring, produced in

accordance with following standards:

- B500B Acc. to SRPS EN 10080, grade B500A (rib like B500B),

- B500B Acc. to BS 4449-2005,

- B500B Acc. to DIN 488-2009,

- PC 52 Acc. to STAS 438/1-89; OB37 Acc. to STAS 438/1-89,

- B60.50 Acc. to MSZ 339-1987.

It can be according to other standards if the customer wishes so, and the technical possibilities of

Metalfer Steel Mill allow it.

When negotiating, the rebars must be defined in single-value, like the following example shows:

Example of the mark: "Rebar 14x12 000 SRPS EN 10080 Grade B500B".

1.1. Construction and technical accordance95% of the produced rebars must be in accordance with this specification. Production is performed

according to technical documentation developed and approved by Metalfer Steel Mill. For data that are

not mentioned in this specification (like dimensions, tolerance and marks), rebar production standard

gives the data.

1.2. Production range1.2.1. Nominal standard diameters of the rebar can be: 8, 10, 12, 14, 16, 18, 20, 22, 25, 28 and 32.

Other diameters can be produced if the customer requires.

1.2.2. Standard length is 12m, but shorter rebars can be delivered if the customer requires.

1.3. Terms and definitions

Terms and definitions, such as: chemical composition, sampling, retesting, performance, dimensions,

weight per meter, tolerance, surface geometry, accordance determination, methods of examination and

identification, are in accordance with B500B Acc. to SRPS EN 10080; B500B Acc. to BS 4449:2005;

B500B Acc. to DIN 488-1:2009; B60.50 Acc. to MSZ 339:1987; PC 52 Acc. to STAS 438/1-89; OB

37 Acc. to STAS 438/1-89.

2. Appearance of the steel rebar

Image 1 — Geometric shape of the steel rib B500B, B500A, 460B

Image 3 – Geometric shape of the steel rib B 60.50 according to MSZ 339-87

PC 52 according to STAS 438/1-89

B500B according DIN 488

Geometry profile according to DIN 488:2009

3. Bar dimensions with tolerances and weight per meter of the length B500B according SRPS EN 10080

Ribs angle

cm2 Kg/m Min Max A/2 min Up to Min Max Max Min Max Max Fr* min 0

8 +/-0,3 0,6 0,503 0,395 -6,0 +6,0 0.24 1.2 0,8 3.2 9.6 2.0 0,25 1.2 1,1 35-75

10

+0,3/-0,5 0,8

0,785 0,617 -4,5 +4,5 0.30 1.5 1 4.0 12.0 2.5 0,30 1,5 1,4 35-75

12 1,13 0,888 -4,5 +4,5 0.36 1.8 1,2 4.8 14.4 3.0 0,35 1,8 1,7 35-75

14 154.14 1,21 -4,5 +4,5 0.42 2.1 1,4 5.6 16,8 3,5 0,45 2,1 1,8 0.056 35-75

16 2,01 1,58 -4,5 +4,5 0.48 2.4 1,6 6.4 19.2 4.00 0,50 2,4 2,0 0.056 35-75

18 253.50 1,99 -4,5 +4,5 0.54 2.7 1,8 7.2 21,6 4,5 0,55 2,7 2,2 0.056 35-75

20 3,14 2,47 -4,5 +4,5 0.60 3.0 2 8.0 24.0 5,0 0,65 3,0 2,5 0.056 35-75

22

+0,5/-0,8 0,13

379.62 2,98 -4,5 +4,5 0.66 3.3 2,2 8.8 26,4 5,5 0,70 3,3 2,7 0.056 35-75

25 4,91 3,85 -4,5 +4,5 0.75 3.8 2,5 10.0 30.0 6,25 0,80 3,7 3,1 0.056 35-75

28 6.16 4,83 -4,5 +4,5 0.84 4.2 2,8 11.2 33,6 7,0 0,85 4,2 3,5 0.056 35-75

32 8,04 6,31 -4,5 +4,5 0.96 4.8 3,2 12.8 38,4 8,0 0,95 4,8 4 0.056 35-75

* - Fr for B500B according to DIN 488 - 2009

Weight deviation +6/-4% according to DIN 488-2009

Diameter, tolerances and ovality (plain bars)

Cross section area

Nominal weght

Weight deviation,

U.W%

T-Rib Heigt TH (mm)

T-Rib Width

TW (mm)

T-Rib Spacing

C (mm)

T-Rib Gap G (mm)

L-Rib Hight LH (mm)

L-Rib Width LW (mm)

Relative rib area

Size (mm)

Tolerance (mm)

Ovality (mm)

A/2 max

0,040 (0,045)*

0,040 (0,045)*

0,040 (0,045)*

4. Chemical composition and mechanical propertiesMechanical examinations are performed at universal test machine MUT-E 1st class according to standard EN ISO 15630-1:

a) yield strength (YS) – Re (MPa, N/mm2);

b) tensile strength (TS)– Rm (MPa, N/mm2);

c) rate (R)Rm/ Re;

d) percent of the total elongation at maximum force (EMF) – Agt (%)

d) elongation after fracture - A5 (%)

C Mn Si S P Cr Ni Cu N Ceq YS TS YS/TS A5 Agt

min 0,14 0,5 0,10 0,28 500 1,05 2,5

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50

min 0,14 0,5 0,10 0,28 500 1,08 5,0

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50

min 0,14 0,5 0,10 0,28 460 1,05 12 2,5

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50

min 0,14 0,5 0,10 0,28 460 1,08 14 5,0

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,80 0,012 0,50

min 0,14 0,5 0,10 0,28 500 1,05 10

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,60 0,012 0,50

min 0,14 0,5 0,10 0,28 500 1,08 10

max 0,22 0,8 0,30 0,050 0,050 0,30 0,30 0,60 0,012 0,50

min 0,14 0,35 255 360 25

max 0,23 0,75 0,07 0,045 0,045 0,30 0,30

min 0,14 0,40 355 510 20

max 0,22 1,6 0,55 0,045 0,045 0,30 0,30

min 0,14 0,5 490 590 18

max 0,21 1,5 0,60 0,050 0,050 0,30 0,30

1800 - 3d

B 60.50 1800 - 3d

Mechanical properties

Bending

B500A

B500B

5d ≤ 16 mm

8d >16 ≤ 25 mm

10d > 25 mm

4d ≤ 16 mm

7d >16 mm

5d ≤ 16 mm

8d > 16 ≤ 28 mm

10d > 28 ≤ 32 mm

MSZ 339-87

STAS

438/1-89

OB 37 1800 - 0,5d

PC 52

Standard ClassChemical composition

SRPS EN

10080

BS

4449:2005460B

DIN

488:2009

460A

B500A

B500B

Ceq = C + Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/15

Notes:

1) It is allowed to cross over maximal value of C for 0,03% if the value of Ceq is decreased in 0,02 per weight (this refers only for standard SRPS EN

10080:2008, BS 4449:2005)

2) Higher content of nitrogen is allowed if sufficient amounts of nitrogen-bending elements are present.

5. Concrete steel is produced in a shape of rebar according to: TP 1-1(Heating the billets inside the furnace), TP 1-2 (Plans of billet input), TP 1-3

(Monitoring during rolling), TP 1-4 (Cooling the billets with water using Tempcore technology), TP 1-5 (Cutting, controling and packing). Steel OB 37 is produced

without water cooling.

6. Packing into bundles and marking the bundle

Rebars are tied in steel band into the bundles of 4t or 2,5 t (+/-5%). In these cases, the steel band is used. It’s diameters are 0,8 x 31,75 mm and the tension strength is σm=1000 N/mm2. Each bundle is tied in 5 places in distance od 2,5m and 1m from it’s end. Soft anneal string is used for lifting the bundle. Diameter of the string is 4 – 6mm, has 4 connections and the tension strength is σm=360 N/mm2.

Also, every bundle has a tagged waterproof label with the data shown in the table. Label is fill in by a printer.

DESCRIPTION: HOT ROLLED REBARNAZIV: TOPLO VALJANE ŠIPKE

PRODUCED IN SERBIAPROIZVEDENO U SRBIJI

PRODUCER: METALFER STEEL MILL D.O.O.PROIZVOĐAČ: METALFER STEEL MILL D.O.O.

SIZE (MM):DIMENZIJA (MM):

LENGTH (M):DUŽINA (M):

QUALITY:KVALITET:

BUNDLE NET WEIGHT (KG):MASA BUNTA NETO (KG):

HEAT No:ŠARŽA Br.:

BUNDLE No.:BUNT Br.:

PRODUCTION DATE:DATUM PROIZVODNJE:

SHIFT:SMENA:

BUYER:KUPAC:

CONTRACT UGOVOR Br.

CLASS:KLASA:

7. DEFECTS OF THE FINAL PRODUCT7.1 Defects of the final product and the identification of the nonconforming product are described

in annex of file KP 1-01/01

DOCUMENT CODE: KP-1-01/01EDITION: 1 PAGE: 1 of 1

QUALITY MANAGEMENT SYSTEM CONFIDENTIALITY:

P.T.

STATUS (COPY NO.):

AUTHOR : Manager of Quality Control Dept. A. Ermolaev CONTROLED BY:Representative of Quality Management A. Ermolaev

APPROVED BY : Deputy of General Manager for production B. Zečević DATE: 03.09.2008 SUPERIOR DOCUMENT: KP-1-01

LIST OF FINAL PRODUCT DEFECTS (II CLASS)

DEFECT CODE

(NUMBER)TYPE OF DEFECT ALLOWANCE

1 SHORT OR LONG BARS± 100 mm

OF NOMINAL LENGHT

2 CAMBERMAXIMUM 0,6%

PER MEASURING LENGHT (6 mm per 1 meter)

3MECHANICAL PROPERTIES ARE NOT ACCORDING TO STANDARD

MECHANICAL PROPERTIES MUST BE ACCORDING TO STANDARDS

4NOMINAL WEIGHT VARIATION PER METER OF LENGHT

± 6 % for ≤ d8mm SRPS EN 10080± 4,5 % (SRPS EN 10080; BS 4449; STAS 438/1-89)+ 6/-4 % DIN 488:2009± 4 % MSZ 339

5

BAR SURFACE DOESN’T MATCH THE STANDARD (LOW OR HIGH RIB, RELATIVE SURFACE Fr OF THE RIB IS NOT SUITABLE)

According to: SRPS EN 10080, BS 4449 Fr 0,040 min. for ≤ d12mm Fr 0,056 min. for > d12mmAccording to: DIN 488:Fr 0,045 min. for d8mm Fr 0,052 min. for d10mm Fr 0,056 min. for ≥ d12mm

6ASPERITY OF BAR SURFACE (NOT A FINE APPEARANCE)

10 TONS MAX CAN BE DONE TO THE CHANGE OF CALIBRE

7NOMINAL DIMENSION DEVIATION (FOR PLAIN BAR)

+0,3/-0,5 mm,OVALTY - 0,8 mm MAXIMUM

Quality Management System Technician notes second category on scale and the bar defects. If the bundle is second category, old lable is removed and new one is placed. New label must contain second category detail and one or more listed defects specified in brackets.

CHANGE NO.: APPROVED BY: DATE CHANGE NO.: APPROVED BY: DATE:

1 A. Ermolaev 18.09.2008

2 A. Ermolaev 29.12.2008

3 I. Romandić 09.12.2010

Marking of finished bar

Marking of finished bar - Standard MSZ 339-1987