BS EN 10293 Information

Information On British Standard Steels BS EN 10087

Important Notes:
All information on this page has been interpreted from the relevent standards, books, other web sites, andl leaflets. This information is of a general nature for initial guidance. Selection of materials for design use must be by communication with the suppliers and by reference to the relevant standards.
The tables below include for composition , proof strength , tensile strength and elongation. The mechanical properties are generally related to room temperature The information is not comprehensive and must be used with extreme care. The relevant standards include detailed notes on the conditions relevant to the properties and also a large quantity of detail information on other properties including hardness values impact values and properties at higher and lower temperatures

Notation

A = % elongation at fracture
R _e = R _p0,2 when applicable or otherwise the Lower Yield Strength ( MPa )
R _p0,2 = 0,2 % proof strength ( MPa )
R _m = Tensile strength ( MPa )
HB = Hardness value (Brinell)
t = Product thickness for specified properties ( mm)
+N = normalised
+NT = normalised and tempered
+QT = quenched and tempered

BS EN 10087:1999. Free cutting steels � Technical delivery conditions for semi-finished products, hot-rolled bars and rods

Product Chemical composition

Name	Number	C	Si max	Mn	P max	S	Pb
Name	Number	%	%	%	%	%	%
Steels Not intended for heat treatment
11SMn30	1.0715	≤0,14	0,05	0,90-1,30	0,11	0,27-0,33	-
11SMnPb30	1.0718	≤0,14	0,05	0,90-1,30	0,11	0,27-0,33	0,20-0,35
11SMn37	1.0736	≤0,14	0,05	1,00-1,50	0,11	0,34-0,40	-
11SMnPb37	1.0737	≤0,14	0,05	1,00-1,50	0,11	0,34-0,40	0,20-0,35
Case-hardening steels
10S20	1.0721	0,07-0,13	0,40	0,70-1,10	0,06	0,15-0,25	-
10SPb20	1.0722	0,07-0,13	0,40	0,70-1,10	0,06	0,15-0,25	0,20-0,35
15SMn13	1.0725	0,12-0,18	0,40	0,90-1,30	0,06	0,08-0,18	-
Direct-hardening steels
35S20	1.0726	0,32-0,39	0,40	0,70-1,10	0,06	0,15-0,25	-
35SPb20	1.0756	0,32-0,39	0,40	0,70-1,10	0,06	0,15-0,25	0,15-0,35
36SMn14	1.0764	0,32-0,39	0,40	1,30-1,70	0,06	0,10-0,18	-
36SMnPb14	1.0765	0,32-0,39	0,40	1,30-1,70	0,06	0,10-0,18	0,15-0,35
38SMn28	1.076	0,35-0,40	0,40	1,20-1,50	0,06	0,24-0,33	-
38SMnPb28	1.0761	0,35-0,40	0,40	1,20-1,50	0,06	0,24-0,33	0,15-0,35
44SMn28	1.0762	0,40-0,48	0,40	1,30-1,70	0,06	0,24-0,33	-
44SMnPb28	1.0763	0,40-0,48	0,40	1,30-1,70	0,06	0,24-0,33	0,15-0,35
46S20	1.0727	0,42-0,50	0,40	0,70-1,10	0,06	0,15-0,25	-
46SPb20	1.0757	0,42-0,50	0,40	0,70-1,10	0,06	0,15-0,25	0,15-0,35

BS EN 10087:1999. Free cutting steels � Technical delivery conditions for semi-finished products, hot-rolled bars and rods

Product Mechanical Properties

Hardness and tensile strength properties for untreated free-cutting steels not intended for heat-treatment

Name	Number	Diameter d	Hardness	Tensile Strength
Name	Number	mm	HB	MPa
11SMn30 11SMNPb30 11SMn37 11SMnPb37	1.0715 1.0718 1.0736 1.0737	5≤d≤10	-	380-570
		10 < d ≤16	-	380-570
		16 < d ≤40	112-169	380-570
		40 < d ≤63	109-169	370-570
		63 < d ≤100	107-154	360-520

Hardness and tensile strength properties of untreated case hardening free-cutting steels

Name	Number	Diameter d	Hardness	Tensile Strength
Name	Number	mm	HB	MPa
10S20 10SPb20	1.0721 1.0722	5≤d≤10	-	360-530
		10 < d ≤16	-	360-530
		16 < d ≤40	107-156	360-530
		40 < d ≤63	107-156	360-530
		6 3 < d ≤100	105-146	350-490
15SMn13	1.0725	5≤d≤10	-	430-610
		10 < d ≤16	-	430-600
		16 < d ≤40	128-178	430-600
		40 < d ≤63	128-172	430-580
		6 3 < d ≤100	125-160	420-540

Mechanical properties of direct-hardening free-cutting steels

Name	Number	Diameter d	Untreated		Quenched and Tempered
		Diameter d	Hardness	Tensile strength	R_e	R_m	A
		mm	HB	MPa	MPa	MPa	%min
35S20 35SPb20	1.0726 1.0756	5 ≤ d ≤10	-	550-720	430	630-780	15
		10 < d ≤16	-	550-700	430	630-780	15
		16 < d ≤40	154-201	520-680	380	600-750	16
		40 < d ≤63	154-198	520-670	320	550-700	17
		63 < d ≤100	149-193	500-650	320	550-700	17
36SMn14 36SMnPb14	1.0764 1.0765	5≤d≤10	-	580-770	480	700-850	14
		10 < d ≤16	-	580-770	460	700-850	14
		16 < d ≤40	166-222	560-750	420	670-820	15
		40 < d ≤63	166-219	560-740	400	640-790	16
		63 < d ≤100	163-219	550-740	360	570-720	17
38SMn28 38SMnPb28	1.0760 1.0761	5≤d≤10	-	580-780	480	700-850	15
		10 < d ≤16	-	580-750	460	700-850	15
		16 < d ≤40	166-216	560-730	420	700-850	15
		40 < d ≤63	166-216	560-730	400	700-850	16
		63 < d ≤100	163-207	550-700	380	630-800	16
44SMn28 44SMnPb28	1.0762 1.0763	5≤d≤10	-	630-900	520	700-850	16
		10 < d ≤16	-	630-850	480	700-850	16
		16 < d ≤40	187-242	630-820	420	700-850	16
		40 < d ≤63	184-235	620-790	410	700-850	16
		63 < d ≤100	181-231	610-780	400	700-850	16
46S20 46SPb20	1.0727 1.0757	5≤d≤10	-	590-800	490	700-850	12
		10 < d ≤16	-	590-780	490	700-850	12
		16 < d ≤40	175-225	590-760	430	650-800	13
		40 < d ≤63	172-216	580-730	370	630-780	14
		63 < d ≤100	166-211	560-710	370	630-780	14

Steel Selection links

British Stainless Steel Association...Properties /Relevant Standards for Stainless Steels
Molybdenum Page...Information on Molybdenum steels
Grade Alternatives... Mikra metal Stainless Steel Grades
Material Cross Reference List..Coromant- Sandvik comprehensive list of steels
Hendrix Group..General Material Information Available
Key-To-Steel...An excellent reference site for steel classifications and properties.- registration required for full access
West Yorkshire Steel Co Ltd ...Reputable UK Steel Supplier, Site includes Material specifications
Introduction to Comparing World Steel Standards ..Download .Useful Notes from ASTM (No equivalent only comparable)
Numbering Systems for Metals and Alloys...WNR (German/european) & UNS Numbering system lookup data
European steels and Alloys ...Database of European Steels and Alloy and equivalents - Vast amount of useful information.

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