Pile Design and Construction Practice, Fifth edition

Types of pile 49

brittle fracture resistance at low temperatures similar to the above impact values and note
must be taken of the maximum thicknesses allowed in BS5950 for each grade of steel at
normal and lower temperatures. High-tensile alloy steel conforming to Grades 55C or
EinBS4360 or to grades above S460Q in BSEN 10137 High Yield Plates can meet
these requirements.
Steel designations to BSEN 10025, 10210, and 10219 are defined in BSEN 10027-1 with
the following nomenclature:

S Structural steel JR Charpy impact value

27 J at 20  C

E Engineering steel J0 Charpy impact value

27 J at 0 C

275 Minimum yield strength J2 Charpy impact value

or in N/mm^2 27 J at 20     C

355

W Improved atmospheric K2 Charpy impact value

corrosion resistance 40 J at 20     C

N Normalized N Charpy impact value

40 J at 20     C

NL Charpy impact value

27 J at 50     C

Q Quenched and tempered

H Hollow section

Below are some steel grades for foundations as BS4630 compared with nearest equivalent
grades in BSEN 10025(2.12):

For BS8004 design For BSEN 1993-5 (EC3-5) design

BS4360 grades Equivalent BSEN 10025-2: 2004 grades

40A Equivalent not available

40B Lowest grade available is S235JR in Part 2

of BSEN 10025 (non-alloy structural steels)

43A Equivalent not available

43B Lowest grade available is S270JR in Part 2

50 S355N (in Part 3 normalizedfine grain structural steels)

50B S355JR (in Part 2)

50EE S355NL (in Part 3)

55C S460N (in Part 3)

55EE S460NL (in Part 3)