Alloy 418 / UNS S41800 Nickel Alloy Product

Name: Alloy 418 / UNS S41800 Nickel Alloy Product
Brand: Hiperoy

Standards

Mat. No. -

EU -

AISI/ASTM 418

UNS S41800

Other Greek Ascoloy 418

Alloy 418 is a temperature resistant chrome-tungsten-nickel martensitic alloy.
649 °C' ye kadar yüksek stresli motor komponentlerinde kullanılmaktadır. Derin sertleşebilirlik ve iyi sürünme dayanımı, temper ve stres korozyon çatlağına karşı dirençlidir.
Heat treatment involves heating it to a temperature of 980-1010°C °followed by oil/air cooling, °and then subjecting it to a double tempering process at a minimum temperature of 620°C for a minimum of 2 hours.

Chemical Composition & Mechanical and Physical Properties

C% 0.15-0.20

Mn% 0.50 max

P% 0.030 max

Si% 0.030 max

Cr% 12.00-14.00

Ni% 0.50 max

Mo% 1.80-2.20

W% 2.50-3.50

Fe% Rest

Hardness HB 302-352

0.2% Yield Strength Rp N/mm2 760 min

Tensile Strength Rm N/mm2 965 min

Elongation A5 % 15 min

Precipitation hardened

Application areas

Compressor parts, Steam and gas turbine blades, High temperature bolts.

Specifications

AMS 5508 (sheet/strip/plate)
AMS 5616 (bar/forging/wire)
ASTM A565 (Grade 615)
SAE J467 (Greek Ascoloy)