IS 4367:1991 10Cr9Mo10 Steel: Specifications & Listings
IS 4367:1991 10Cr9Mo10: 10Cr9Mo10 is a steel in IS 4367:1991 (Alloy Steel Forgings for General Industrial Use), which covers forgings in the as forged, heat-treated or machined condition.
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
Cr
Mo
S
P
<=0.15
<=0.50
0.40-0.70
<=0.30
2.00-2.50
0.90-1.10
<=0.035
<=0.035
Mechanical Properties
Tensile Strength
410-590 MPa
Yield Strength
245 MPa min
Elongation
>=18%
Izod Impact
55 J min
Hardness (soft annealed)
<=187 HB
Condition
Normalised and tempered, ruling section up to 50 mm
More data from IS 4367:1991
From the standard
Properties by ruling section2 sections
Tensile strength (MPa)
Yield strength, min (MPa)
Elongation, min (%)
Izod impact, min (J)
Hardness (HB)
Limiting ruling section (mm)
410 to 590
245
18
55
Not specified
50
520 to 680
310
18
50
Not specified
Not specified
Test condition: normalised and tempered. These properties are for guidance only; other values may be mutually agreed between the customer and the supplier. Maximum hardness in the soft annealed condition: 187 HB.
Source: IS 4367:1991 with Amendments 1 and 2, Table 3
Sulphur, phosphorus and aluminium limitsordering options
Option 1
Sulphur and phosphorus 0.030 max each
Option 2
Sulphur 0.020 to 0.035, phosphorus 0.035 max
Aluminium, when the steel is aluminium killed
0.02 to 0.05
The purchaser orders sulphur and phosphorus under option 1 or option 2.
Source: IS 4367:1991 with Amendments 1 and 2, Table 1, notes 1 and 2
Active IS 4367:1991 10Cr9Mo10 Listings on M-EX (For Sale)