Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Used to a limited extent for special applications; supplied to a specified composition.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
Ni
S
P
0.50-0.60
0.05-0.35
0.50-0.80
0.50-0.80
<=0.060
<=0.060
More data from BS 970:1955
From the standard
Condition of material on delivery
A
Bars and billets for forgings as rolled or forged unless order states otherwise.
B
Forgings and drop-forgings finally heat treated unless order states otherwise.
C
Bars for machining finally heat treated unless order states otherwise.
D
Bright bars finally heat treated, before or after cold work at manufacturer option, unless order states otherwise.
Source: BS 970:1955, Part 2, En 10 (page 63)
Heat treatment
Heat treatment
To be agreed between purchaser and manufacturer
Temperatures in degrees C as printed.
Source: BS 970:1955, Part 2, En 10 (page 63)
Status in the 1955 edition
Status
Deleted by Amendment 7
Reason
Amendment 7 (Sep 1970): direct hardening alloy steels moved to BS 970 Part 2:1970
BS 970:1955 was amended up to Amendment 10 (June 1972); steels were moved to the revised Parts 1 to 5 and deleted from this edition.
Source: BS 970:1955, Amendment slips 6 to 10
Active BS 970:1955 EN10 Listings on M-EX (For Sale)