BS 4449:1988

Foreword
Committees responsible
Specification
1 Scope
2 Definitions
3 Sizes
4 Cross-sectional area and mass
5 Length
6 Steelmaking process
7 Chemical composition
8 Bond classification of deformed bars
9 Routine inspection and testing
10 Mechanical properties
11 Fatigue properties of deformed bar
12 Retests
13 Verification of characteristic strength
14 Marking
Appendices
A Determination of the effective cross-sectional area
    of deformed bars
B Bond classification of deformed bars (bond test)
C Inspection, testing and certification
D Method of test for fatigue properties of deformed
    bars
E Tensile test multiplying factors
F Recommended formulae for calculating projected rib
    areas
G Information to be supplied by the purchaser
Tables
1 Preferred nominal sizes
2 Cross-sectional area and mass
3 Tolerance on mass
4 Chemical composition of steel grades: cast analysis
5 Maximum carbon equivalent values: cast analysis
6 Maximum deviations in chemical composition on
    product analysis
7 Tensile properties
8 Percentage total strain
9 Bend test formers
10 Rebend test formers
11 Acceptability index (k) as a function of the number
    (n) of the test results (for a reliable failure
    rate of 5% (pass = 0.95) at a probability of 90%
    (1-alpha = 0.90))
12 Test stress ranges for nominal bar sizes
Figure
1 Typical mould for bond performance testing

Requirements for weldable steel bars. Covers plain round steel bars in Grade 250 and deformed high yield steel bars in Grade 460.