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BS 970 (Part 1):1991 055M15 Steel: Specifications & Listings

BS 970 (Part 1):1991 055M15: 055M15 is a carbon steel specified in BS 970 Part 1:1991 (category 1).

Category: Carbon Steel
Grade Details
GradeBS 970 (Part 1):1991 055M15
Standard BS 970 (Part 1):1991
ApplicationsAs-rolled, or as-rolled and softened, steel (section two)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
SAE J403 1009 SAE J403:2001 USA No activity yet
IS 1570 (Part 2/Sec 1) 5C4 IS 1570 (Part 2/Sec 1):1979 India No activity yet
SAE J403 1007 SAE J403:2014 USA No activity yet
IS 1570 (Part 2/Sec 1) 4C2 IS 1570 (Part 2/Sec 1):1979 India No activity yet
SAE J403 1004 SAE J403:2014 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J403 1009 SAE J403:2014 Strong Match
BS 970 EN2B BS 970:1955 Strong Match
SAE J403 1009 SAE J403:2001 Strong Match
SAE J403 1009 SAE J403:2009 Strong Match
BS 970 EN2A BS 970:1955 Strong Match
IS 1570 (Part 2/Sec 1) 5C4 IS 1570 (Part 2/Sec 1):1979 Strong Match
SAE J403 1007 SAE J403:2014 Strong Match
BS 970 EN2A/1 BS 970:1955 Strong Match
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn
<=0.20 <=0.80
Mechanical Properties
Condition As-rolled
Tensile Strength 310 MPa min
Elongation 25 % min
Hardness 121 HB min

More data from BS 970 (Part 1):1991

From the standard
Other composition limits
Condition of supply
As-rolled
Category
Category 1 steel
Category 1 steels are preferred for new designs and established designs (clauses 1.4 and 2.1). Category 2 steels are printed in italic type.
Source: BS 970 (Part 1):1991, Table 2
Mechanical properties as rolled
Limiting ruling section
150 mm
Tensile strength, min
310 MPa
Elongation, min
25 %
Hardness
121 HB min.
Yield, Izod and KCV values are not specified (printed as dashes). 1 N/mm2 = 1 MPa.
Source: BS 970 (Part 1):1991, Table 2

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