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UNS HEV7 Details

HEV7 Application:Steel for exhaust valves

Category Type Grade Designations
Grades Stainless Steels HEV7 USA - UNS ,

Chemical composition(wt.%) of HEV7 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 0.70
Mn - 1.50
P - -
S - -
Cr - 14.75
Ni - 26.0
Mo - 1.25
Steel for exhaust valves

Mechanical properties of grade HEV7

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)
672 (≥) 823 (≥) 41 22 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical properties of grade HEV7

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
963 (≥) 837 (≥) 12 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 411
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
776 398 262

HEV7 - 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
HEV7 UNS USA
Steel for exhaust valves
A 959 S66286 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S66286 AISI USA
Iron Base Superalloy
IncoloyA-286 ASTM USA
Creep resisting steels, nickel and cobalt alloys

Relevant products

HEV7 Steel Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
IncoloyA-286 / GH 2132 Stock Φ8-65mm*L Round Bar Kgs 489 Hot-Rolled+Annealed+black Enquiry

Enquiry