300M / AISI E4340M Special Metal Alloy Product

Name: 300M / AISI E4340M Special Metal Alloy Product
Brand: Hiperoy

Standards

Mat. No. -

EU -

AISI -

UNS -

Diğer Aircraft Alloy

The 300M alloy is similar to 4340 steel. It contains vanadium and high silicon content.

300M provides toughness and high strength with its high carbon content. .

Chemical Composition & Mechanical and Physical Properties

C% 0.40-0.45

Mn% 0.60-0.90

Si% 1.45-1.80

S% 0.010 max

P% 0.010 max

Cr% 0.70-0.95

Mo% 0.30-0.50

Ni% 1.65-2.00

V% 0.30-0.50

Cu% 0.35 max

0.2 % Yield Strength Rp ksi 230

Tensile Strength Rm ksi 280x

Elongation 4D % -

Application areas

In heavy industry, it is used in transmission parts, gears, shafts, as well as in defense industry, aviation, and landing gears. As a rocket motor casing.

Specifications

AMS 6257 Bars / Forgings AMS 6417 Vac Melt Bars / tubes AMS 6419 Bars / tubes MIL-S-8844 Cl3, MIL-S-83135 ASTM A604 S155, BS 2S149