INCOLOY® alloy 27-7MO

INCOLOY-Alloy-27-7MO

Applications

Applications for INCOLOY alloy 27-7MO are found in the pollution control, power, marine, chemical processing, pulp and paper and oil and gas industries. The alloy offers a unique combination of corrosion resistance, high strength and ease of fabrication at an economical price. Alloy 27-7MO is available in standard product forms including plate, sheet, rod, bar.

Chemistry

Chemical Requirements
NiCrMoMnCSiCuFe
Max26.020.56.53.000.020.51.5Bal.
Min28.023.08.000.5

Tensile Data

Mechanical Property Requirements
Ultimate TensileYield Strength (0.2% OS)Elong.R/AHardness
Min120 KSi60 KSi50Rb 95
Max
Min827 MPa414 MPa
Max

Specifications

FormStandard
Metal TypeUNS S31277
BarASTM A 479/ASME SA 479
WireASTM A 479/ASME SA 479
SheetASTM A 240/ASME SA 240
PlateASTM A 240/ASME SA 240
TubeASTM A 213/ASME SA 213 (Tube), ASTM A 249/ASME SA 249
PipeASTM A 312/ASME SA 312
FittingASTM A182
ForgingASTM A 479/ASME SA 479, ASTM A182
Weld Wire
Weld Electrode
ASME CODEAllowable design stresses for ASME Boiler and Pressure
Vessel Code construction are defined in ASME Code Case 2458.
Din

Machinability RATING: 27% Of B-1112

TYPICAL STOCK REMOVAL RATE: 45 surface feet/minute with high speed tools, 125 surface feet/minute with carbide.

Machining Guide
OperationTool
Type
Speed
SFPM
Feed
Inch Per Rev.
Depth in Cut
Inch
Cut Type
Turning WC68
88
.009-.016
.006-.009
.050-.100
.011-.015
Rough
Finish
HSS18
21
.007-.011
.003-.008
.025-.045
.008-.011
Rough
Finish
Facing WC68
88
.009-.016
.006-.009
.040-.075
.011-.015
Rough
Finish
HSS18
21
.007-.011
.003-.008
.025-.045
.008-.011
Rough
Finish
BoringWC42
53
.009-.016
.006-.009
.043-.060
.012-.015
Rough
Finish
DrillingHSS18
25
.003-.007
.002-.004

Rough
Finish
ReamingHSS25
35
.006-.010

.012-.015
Rough
Finish
Shaping WC20
30

.005-.010
.060-.090
.018-.025
Rough
Finish
HSS13
15

.005-.010
.050-.080
.018-.025
Rough
Finish
MillingHSS15
25
1/2-1 IPM.100-.200 in. cutRough
Finish

INCOLOY® is a registered trademark of Special Metals Corporation