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UNS EV5 Details

EV5 Application:Steel for exhaust valves

Category Type Grade Designations
Grades Stainless Steels EV5 USA - UNS ,

Chemical composition(wt.%) of EV5 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.30 0.45
Si 2.75 3.25
Mn 0.80 1.30
P - 0.040
S - 0.030
Cr 18.0 20.0
Ni 7.50 8.50
Steel for exhaust valves

Mechanical properties of grade EV5

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 Condition Brinell hardness (HBW)
181 (≥) 755 (≥) 13 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade EV5

Property Density
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
195 (≥) 852 (≥) 22 23 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
344 739 378

EV5 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
EV5 UNS USA
Steel for exhaust valves
S63014 AISI USA
Steel for exhaust valves
HEV5 UNS USA
Steel for exhaust valves
N07080 AISI USA
Steel for exhaust valves
EV6 UNS USA
Steel for exhaust valves
S63015 AISI USA
Steel for exhaust valves

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