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E4Application: carbide geological mining tools①
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy E4JISJapan

Chemical composition%of the ladle analysis of gradeE4

W(%)Co(%)
87-928-13
E4
Hardness quartile HRA: 87
Bending strength frequency/MPa: 1667
Mechanical properties of gradeE4
Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)
453(≥)936(≥)232242Solution and Aging,Annealing,Ausaging,Q+T,etc131
Physical properties of gradeE4
PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
373(≥)515(≥)133212Solution and Aging,Annealing,Ausaging,Q+T,etc132
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
473273797
E4Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
Rene 41JISJapan
These products have been used typically for parts requiring high strength up to 1600 °F (871 °C) and oxidation resistance up to 1800 °F (982 °C), but usage is not limited to such applications
A 240 S41008JISJapan
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A 473 S41008JISJapan
Stainless Steel Forgings
A 554 S41008JISJapan
Welded Stainless Steel Mechanical Tubing
A 815 CRS41008JISJapan
Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings
A 815 WPS41008JISJapan
Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings
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Martensitic Chromium Stainless Steel (Hardenable by Heat Treatment, Low Carbon)
SA-240 S41008JISJapan
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-815 CRS41008JISJapan
Specification for Wrought Ferritic, Ferritic /Austenitic, and Martensitic Stainless Steel Piping Fittings
SA-815 WPS41008JISJapan
Specification for Wrought Ferritic, Ferritic /Austenitic, and Martensitic Stainless Steel Piping Fittings
A 276 S41040JISJapan
Stainless Steel Bars and Shapes
S41040JISJapan
Martensitic Chromium Stainless Steel with Columbium
A 176 S41050JISJapan
Stainless and Heat-Resisting Chromium Steel Plate, Sheet, and Strip
A 240 S41050JISJapan
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 959 S41050JISJapan
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S41050JISJapan
Ferritic Chromium Stainless Steel with Nickel
SA-240 S41050JISJapan
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 565 S41800JISJapan
Martensitic Stainless Steel Bars for High-Temperature Service
S41800JISJapan
Martensitic Chromium Wolfram Nickel Stainless and Heat Resisting Steel
A 582 S42023JISJapan
Standard Specification for Free-Machining Stainless Steel Bars

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