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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
% % % % % %
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
mm HB MPa
11SMn30
11SMNPb30
11SMn37
11SMnPb37
1.0715
1.0718
1.0736
1.0737
5d10 - 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
mm HB MPa
10S20
10SPb20
1.0721
1.0722
5d10 - 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 5d10 - 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
Hardness Tensile strength Re Rm 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
5d10 - 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
5d10 - 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
5d10 - 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
5d10 - 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
  1. British Stainless Steel Association...Properties /Relevant Standards for Stainless Steels
  2. Molybdenum Page...Information on Molybdenum steels
  3. Grade Alternatives... Mikra metal Stainless Steel Grades
  4. Material Cross Reference List..Coromant- Sandvik comprehensive list of steels
  5. Hendrix Group..General Material Information Available
  6. Key-To-Steel...An excellent reference site for steel classifications and properties.- registration required for full access
  7. West Yorkshire Steel Co Ltd ...Reputable UK Steel Supplier, Site includes Material specifications
  8. Introduction to Comparing World Steel Standards ..Download .Useful Notes from ASTM (No equivalent only comparable)
  9. Numbering Systems for Metals and Alloys...WNR (German/european) & UNS Numbering system lookup data
  10. European steels and Alloys ...Database of European Steels and Alloy and equivalents - Vast amount of useful information.

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Last Updated 27/12/2008