What is ST37 Mild Sheet?

SlabThe thickness of the semi-product of rectangular section, which is called the solidification of the liquid steel with the continuous casting technique, is obtained by hot rolling in the hot rolling mill.1.50 - 20,00 mmin the form of rolls or sheets varying in the range ofis flat steel.

ST37 Black hair black sheets hot rollingproduced byflat steelare. They are the most produced and consumed products in Turkey and in the world. Especially in developed and developing countries, its production and consumption is increasing every year.Black hairThe fields of application are very wide.

ST37 Mild Steel Mild Steel Properties

ST37 Mild Steelblack sheets1,50 mm - 20,00 mmproduced betweenS235JR(ST37) kquality is the most preferred in the world market and in our country.one of the qualities.

ST37 S235 Suitability for Surface Coating:

IN 10025-2:2004under the standardS235JR, S275JR, S355JRqualities produced with notations,Class 1 or Class 3 It has been designed in accordance with the hot-dip galvanizing method. other information hot products given in the quality tables.

Product requests suitable for galvanized coating must be specified at the order stage..

Quality

Hot Rolled Non-Alloy Structural Steels
Standard Equivalent		ERDEMIR Quality No.	C d(thickness, mm)			Mn max,	P max,	S max,	And max,	With max,	N(1) max,	CE(IIW) ⁽⁴⁾max, (%) d (mm)
Standard Equivalent			<16 max,	16<d<40 max,	40<d<100 max,							CE(IIW) ⁽⁴⁾max, (%) d (mm)
Standard	Quality		<16 max,	16<d<40 max,	40<d<100 max,							<30	30<d<40	40<d<100
IN 10025-2	S235JR+AR	3237	0,17	0,17	0,20	one,40	0,035	0,035	-	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR	3137(one⁴⁾	0,17	0,17	0,20	one,40	0,035	0,035	-	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR CTB (With)	328168	0,17	0,17	0,20	one,40	0,035	0,035	0,14-0,25	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR CTA	4237(7)	0,17	0,17	0,20	one,40	0,035	0,035	0,03	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR Custom CTA	42387X11X15)	0,06-0,17	-	-	one,20	0,025	0,025	0,03	0,55	0,012	0,35	-	-
IN 10025-2	S235JR+AR Special	426011X12X15)	0,050-0,095	-	-	0,30-0,45	0,015	0,025	0,05	0,55	0,012	0,35	-	-
IN 10025-2	S235JR+AR CTA	4437 ™¹⁵⁾	0,17	-	-	one,40	0,035	0,035	0,03	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR CTA	5437⁽⁸⁾	0,17	0,17	0,20	one,40	0,035	0,035	0,14-0,25	0,55	0,012	0,35	0,35	0,38
IN 10025-2	S235JR+AR CTB	6237⁽²⁾⁽⁸⁾	0,17	0,17	0,17	one,40	0,025	0,025	0,14-0,25	0,55	-	0,35	0,35	0,38
IN 10025-2	S275JR+AR	324415)	0,20	0,21	0,22	one,50	0,035	0,035	-	0,55	0,012	0,40	0,40	0,42

Descriptions

In the chemical composition of the steel, min.0.020%N upper limit value is not applied for Al grades.
These grades are produced as fully stagnant and Al/N minimum2:1rate.

4) Carbon equivalent, CEV (IIW) % = C + Mn / 6 + (Cr +Mo + V) / 5 + (In+ Cu) / 15 is calculated according to the formula.

7) It is suitable for galvanized coating as “Category A”. Kategori A sınıfında Si < 0.030% ve Si+2.5P < 0.090% limiti uygulanır.

8) It is suitable for galvanized coating as “Category B”. Kategori B sınıfında Si 0.14< Si <0.25% limiti uygulanır.

9) Compliance classes for galvanization In Category A, Si < 0.030% and Si+2.5P < 0.090% limit. Si 0.14< Si <0.25% limit in Category B class. In category D class, Si 0.25< Si<0.35% limit is applied.10) These grades are produced as "Special" within the framework of agreements made with the customer.

12) Nb %: Contains 0.015-0.050.

13) Ti can be added depending on the production results.

14) Erdemir 3137 quality is only for pipe production orders andMax. It is produced up to 8 mm.

15) Max. It is produced up to 8 mm thickness.

16) Max. It is produced up to 16 mm thickness.

Chemical Composition (%)
Standard Equivalent		ERDEMIR	C	Mn	P max.	S max.	Andmax.	Withmax.	N4	CE(IIW)⁽⁶⁾max. (%)
Standard	Quality	Quality No.	max.	max.	P max.	S max.	Andmax.	Withmax.	max.	CE(IIW)⁽⁶⁾max. (%)
IN 10025-2	S235JR+AR Special	3235(2)	0.17	1.4	0.035	0.035	0.4	0.55	0.012	0.35
IN 10025-2	S235JR+AR CTA	42758^11th)	0.17	1,2	0.025	0.035	0.03	0.55	0.012	0.35
IN 10025-2	S235J2S235J2+N CTA	4239(5(8)	0.17	1.4	0.025	0.025	0.03	0.55		0.35

Descriptions

The quality specified in this table is produced at İsdemir facilities within the framework of agreements made with customers.
In this quality, it is produced in such a way that roll breakage does not occur.
Mechanical testing is not performed according to production practices.
In the chemical composition of the steel, min. For grades with 0.020% Al, the upper limit value of N is not applied.
These grades are produced as fully stagnant and Al/N minimum2:1rate.
Carbon equivalent, CEV (IIW) % = C + Mn / 6 + (Cr +Mo + V) / 5 + (In+ Cu) / 15 is calculated according to the formula.
For S275 and S355 gradesmax. carbonequivalent (CEV) is increased by 0.02% for %Si ≤ 0.04 and 0.01% for %Si ≤ 0.25.
Galvanized coating as “Category A”suitable.CategorySi ≤ 0.030% and Si+2.5P ≤ 0.090% limits apply in Class A
Galvanized coating as “Category B”suitable.CategoryIn class B, the limit of Si 0.14≤ Si ≤0.25% is applied.
In line with production practices, the suitability for galvanized coating can be considered subject to negotiation at the order stage. Classes of suitability for galvanized coating Category A

in the classroom Si ≤ 0.030% ve Si+2.5P ≤ 0.090% limiti, Kategori B sınıfında Si 0.14≤ Si ≤0.25% limiti, Kategori D sınıfında Si 0.25< Si ≤0.35% limiti olarak uygulanır.

Max. 8 mm thicknarrowly produced.

Usage areas

ST37 Black Sheet weldable general structural steels,

- In the manufacture of construction machinery and construction machinery,

- In general construction plates,

- In the manufacture of road and railway vehicles,

- Storage tanks,

- Container manufacturing,

- In the manufacture of pressure vessels or boilers,

- In LPG production,

- It is used inside the ship and on the keel.