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IS 1570 (Part 3):1979 25C12S14 Steel: Specifications & Listings

IS 1570 (Part 3):1979 25C12S14: 25C12S14: carbon or carbon-manganese free cutting steel (old designation 25Mn1S14). Specified in IS 1570 (Part 3):1979.

Category: Free Machining Steel
Grade Details
GradeIS 1570 (Part 3):1979 25C12S14
Standard IS 1570 (Part 3):1979
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
BS 970 (Part 1) 216M28 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 1) 212M36 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 1) 212A37 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 3) 210M15 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 216M36 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 1) 214A15 BS 970 (Part 1):1983 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 1) 216M28 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 212M36 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 212A37 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 3) 210M15 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 3) 216M36 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 216M36 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 214A15 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 210M15 BS 970 (Part 1):1983 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 Si Mn P S
0.20-0.30 <=0.25 1.00-1.50 <=0.060 0.10-0.18
Mechanical Properties
Tensile Strength 500-600 MPa
Elongation >=20%
Condition Hot rolled or normalized bars, billets and forgings (Table 2), ruling sections up to 150 mm

More data from IS 1570 (Part 3):1979

From the standard
Tensile limits, hot rolled or normalized bars, billets and forgings ruling sections up to 150 mm
Tensile strength
500 to 600 MPa
Elongation, min (gauge length 5.65 sqrt(A))
20%
Where a minimum yield stress is required, 55 percent of the minimum tensile strength should be satisfactory.
Source: IS 1570 (Part 3):1979, Table 2
Tensile limits, cold drawn bars 4 size ranges
Size (mm)Tensile strength, min (MPa)Elongation, min (%)
up to 206208
over 20 to 4056010
over 40 to 6352011
over 6350013
Source: IS 1570 (Part 3):1979, Table 3

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