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UNS EVl7 Details

EVl7 Application:Steel for exhaust valves

Category Type Grade Designations
Grades Stainless Steels EVl7 USA - UNS ,

Chemical composition(wt.%) of EVl7 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.030
Cr 17.0 19.0
Ni 8.00 10.0
Cu 3.00 4.00
Steel for exhaust valves

Mechanical properties of grade EVl7

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)
366 (≥) 936 (≥) 33 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical properties of grade EVl7

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
428 (≥) 531 (≥) 31 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
551 742 375

EVl7 - 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
A 493 S30430 SAE USA
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A 959 S30430 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
F 837 Class A1-50 S30430 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-55 S30430 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-70 S30430 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F738 Class A1-70 S30430 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-50 S30430 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-80 S30430 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F836 Class A1-50 S30430 SAE USA
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
F836 Class A1-50 S30430 SAE USA
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
F836 Class A1-80 S30430 SAE USA
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
S30430 AISI USA
Stainless steel and heat resistant steel
S30430 UNS USA
Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
EVl7 UNS USA
Steel for exhaust valves

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