Transmission Irons

Rebars for construction

Transmission Irons

Transmission iron is a special product in the iron and steel sector. If we look at the answer to the question of what is transmission iron in a general framework, we can say that it is cold drawn, round section and 1008 SAE or EN S235Jr quality steels. When we look at their properties, we see how reasonable they are for various procedures. For example, let's talk about its suitability for the welding procedure, which is an important feature. Having a low carbon value, it becomes very suitable for welding application thanks to these properties. On the other hand, they are also suitable materials for machining. They can be simply processed on both CNC and lathe machines, providing both ease of use and efficiency. Steels that are shaped by moulding at room temperature are called transmission steel or cold drawing steel.

Quality : ST37-K - S235JR - ST44-2 - ST52-3 - S275JR

Standard : EN 10060 - DIN 1013

Diameter : 20 - 100 mm

With cold drawing process, it is aimed to increase the yield strength and tensile strength of the material without the need for heat treatment.

-Products have low carbon values. Thanks to these features, their welding capability is very high.

-One of the most important features is that they are economical compared to other steel types.

-The fact that it is easy to perform operations or assembly with transmission shafts makes the shaft preferred in different sectors.

-It is also preferred for the operations to be performed due to the lack of chip removal hardness during the use of transmission shafts.

-The high surface quality of the shafts and smooth shaping are among the features that increase their preference.

-One of the most important features of transmission shafts is their mechanical properties. These properties are easy shrinkage, hardness, impact, shrinkage and elongation.

-Our transmission shafts shrink easily, they are extremely resistant to external impacts. They are also resistant to situations such as shrinkage or elongation. It can ensure that operations can be performed without breaking in tensile situations.

-The heat retention capacity and expansion coefficients of our shafts are also high.

Areas of Use

If we briefly mention the areas of use, we can list them as follows; It is used in construction, automotive, machinery production, white goods sector and many similar areas, as well as in special areas such as the defence industry. While the areas of use of transmission steels can be listed in this way, it is not possible to list the products they are used in. Numerous products contain transmission iron. The products produced by cold drawing technique are subjected to a second process in order to be formed into different shapes such as round, square or hexagonal. This process can be simply called “tightening”. If the customer has expectations such as meticulous tolerance and high surface quality, this cold drawing technique will give the best results. In short, the product obtained by cold drawing technique is made with precise dimensional tolerance, has superior surface quality, both yield and tensile stress of the product increases and its hardness increases while its continuity decreases. In the end, transmission iron is encountered as a product with superior properties.

Quality

S235JR 5437 QUALITY MECHANICAL PROPERTIES

Mechanical Properties

Standard Provision

ERDEMİR

Quality No

Re (min) N/mm²( kg/mm² ) d(thickness, mm)

Rm⁽¹⁾

N/mm²( kg/mm² ) d(thickness, mm)

A (%) min.

d(thickness, mm)

Impact (3) (Longitudinal)

A80

<16

>16

<40

>40

<63

>63

<80

>80

<100

<1.5

>1.5

<2.5

>2.5

<40

>40

<63

>63

<100

Temperature.

°C

KVc

J(min.)

Standard

Quality’⁸¹

EN 10025-2

S235JR+AR CTB

5437

235 (24.0)

225 (23.0)

215

(21.9)

215 (21.9)

215

(21.9)

360-510 (36.7-52.0)

+20

272)

S275JR 3244 CHEMICAL COMPOSITION Standard: EN 10025-2:2019

Chemical Composition (%)

Standard Provision

ERDEMİR

C d(thickness, mm)

N(1)

CE(IIW) ⁽⁴⁾max. (%)

Quality No

<16

16<d<40

40<d<100

d (mm)

Standard

Quality

max.

<30

30<d<40

40<d<100

EN 10025-2

S275JR+AR

3244(1)

0.21

0.22

1.50

0.035

0.55

0.012

0.40

0.42

Max. Carbon equivalent (CEV) for S275 and S355 grades can be increased by %0.02 for %Si ≤ 0.04, %0.01 for %Si ≤ 0.25.

S355JR 3252 CHEMICAL COMPOSITION Standard: EN 10025-2:2019

Chemical Composition (%)

Standard Provision

ERDEMİR

C d(thickness, mm)

N(1)

CE(IIW) ⁽⁴⁾max. (%)

Quality No

<16

16<d<40

40<d<100

d (mm)

Standard

Quality

max.

<30

30<d<40

40<d<100

EN 10025-2

S355JR+AR

3252(1)

0.24

1.60

0.035

0.55

0.012

0.45

0.47

Max. Carbon equivalent (CEV) for S275 and S355 grades can be increased by %0.02 for %Si ≤ 0.04, %0.01 for %Si ≤ 0.25.

Transmission Irons