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IS 1570 (Part 3):1979 11C10S25 Steel: Specifications & Listings

IS 1570 (Part 3):1979 11C10S25: 11C10S25: carbon or carbon-manganese free cutting steel (old designation 11S25). Specified in IS 1570 (Part 3):1979.

Category: Free Machining Steel
Grade Details
GradeIS 1570 (Part 3):1979 11C10S25
Standard IS 1570 (Part 3):1979
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
BS 970 (Part 1) 220M07 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 1) 230M07 BS 970 (Part 1):1983 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 1) 220M07 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 230M07 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 3) 230M07 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 210M15 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 210A15 BS 970 (Part 1):1983 Close Alternative
SAE J403 1213 SAE J403:2001 Close Alternative
SAE J403 1213 SAE J403:2009 Close Alternative
SAE J403 1213 SAE J403:2014 Close Alternative
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
0.08-0.15 <=0.10 0.80-1.20 <=0.060 0.20-0.30
Mechanical Properties
Tensile Strength 370-490 MPa
Elongation >=22%
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
370 to 490 MPa
Elongation, min (gauge length 5.65 sqrt(A))
22%
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 205008
over 20 to 4044011
over 40 to 6340013
over 6337013
Source: IS 1570 (Part 3):1979, Table 3

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