STALEXPERT - Structural steel

Structural alloy steel

Commonly referred to as quality steel. In its chemical composition, in addition to carbon, there are many different elements known as alloying elements, whose content ranges from a few to several tens of per cent. Through their presence in the chemical composition, the steel acquires various strength properties, tensile, ductility, elasticity or increased hardenability, depending on the structural requirements. Quality steel is mainly used in the construction of machinery and equipment. Suitably selected steel grades are used to produce e.g. gears, shafts, bodies, pins, etc. Due to the very large number of qualitative steel grades, they have been divided into types based on their application and subjected to various thermo-chemical treatments such as softening, normalising, hardening, carburising, nitriding, etc.

Below is a breakdown of these and the range available.

Steels for quenching and tempering

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	rods	tubes	flat bars	forgings	sheet metal semi-finished products
25HM	25CrMo4	1.7218	■ ( plates )	■			■	■ ( forms )
30G2	28Mn6	1.1170		■			■
34HNM	34CrNiMo6	1.6582		■			■
35HM	34CrMo4	1.7220		■			■
40H	41Cr4	1.7035		■			■
40HM	42CrMo4	1.7225	■	■			■	■
45HNMF/A				■			■

Case-hardening steel

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	rods	tubes	flat bars	forgings	sheet metal semi-finished products
16HG	16MnCr5	1.7131	■ ( plates )	■		■	■	■ ( forms )
20HG	20MnCr5	1.7147		■			■
17HNM	1.6587	18CrNiMo7-6		■			■
18HGT				■			■
18H2N2	18CrNi8	1.5920		■			■

Nitriding steel

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	rods	tubes	flat bars	forgings	półfabrykaty z blach
33H2NMJ	34CrAlNi7-10	1.8550	■ ( plates )	■			■	■ ( forms )
33H3MF	31CrMoV9	1.8519		■			■
38HMJ	41CrAlMo7-10	1.8509		■			■

Spring steel

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	tapes	rods	sections	forgings	sheet metal semi-finished products
50HF	51CrV4	1.8159	■	■	■		■	■ ( forms )
50HS					■		■
65	C67	1.0603		■

Bearing steel

Steel grade

Offered assortment

Werkstoff Nr.

sheets

tubes

rods

sections

forgings

sheet metal semi-finished products

ŁH15

100Cr6

1.3505

■

Steel with special properties

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	tubes	rods	sections	forgings	sheet metal semi-finished products
12H2N4A					■		■
20H2N4A					■		■
30H2N2A	30CrNiMo8	1.6580			■		■

Free-cutting steel

Steel grade			Offered assortment
PN	EN	Werkstoff Nr.	sheets	tubes	rods	flat bars	forgings	sheet metal semi-finished products
A10X	11SMn30	1.0715			■	■
	11SMnPb30	1.0718			■	■
	11SMn37	1.0736			■	■
	11SMnPb37	1.0737			■	■

Structural steel – alloyed

Structural alloy steel

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