1010 This is one of the most widely
used low carbon steels for low strength applications. It is best suited
for parts whose fabrication involves moderate to severe forming and some
machining. Its weldability is excellent and it can be case hardened for
wear resistance by cyaniding.
1018 is
a popular carburizing grade of steel. It can be strengthened by cold working
or surface hardened by carburizing or cyaniding. It is relatively soft
and has good weldability and formability.
1020 is
a general-purpose low-carbon “mild” steel. It is easy to fabricate by
the usual methods such as mild cold or hot forming and welding. It is
weldable by all processes and the resulting welds are of extremely high
quality.
4130 This
chromium-molybdenum alloy is one of the most widely used aircraft steels
because of its combination of weldability, ease of fabrication and mild
hardenability. In relatively thin sections, it may be heat treated to
high strength levels. In the normalized condition it has adequate strength
for many applications. It may be nitrided for resistance to wear and abrasion.
4140 This
chromium-molybdenum alloy is a deep hardening steel used where strength
and impact toughness are required. It has high fatigue strength making
it suitable for critical stressed applications. It may be nitrided for
increased resistance to wear and abrasion.
4340 This
chromium-nickel-molybdenum alloy is a widely used deep-hardening steel.
It possesses remarkable ductility and toughness. With its high alloy content
uniform hardness is developed by heat treatment in relatively heavy sections.
Its high fatigue strength makes it ideal for highly stressed parts.
6150 This
chromium-vanadium alloy steel is similar to 4340. It has good hardenability,
good fatigue properties and excellent resistance to impact and abrasion.
8620 This
is a “triple alloy” chromium-nickel-molybdenum steel. It is readily carburized.
It may be heat treated to produce a strong, tough core and high case hardness.
It has excellent machinability and responds well to polishing operations.
It is easily welded by any of the common welding processes, although the
section should be heated and stress relieved after welding.
9310 This
chromium-nickel-molybdenum alloy is a carburizing steel capable of attaining
high case hardness with high core strength. It has excellent toughness
and ductility.
4620 This
nickel-molybdenum alloy is a carburizing steel capable of developing high
case hardness and core toughness. It can be forged similarly to the other
carburizing grades. Because of its relatively high nickel content, it
is not as readily cold-formed.
5160 This
carbon-chromium grade of spring steel has a high yield/tensile strength
ratio, excellent toughness and high ductility. It is very difficult to
machine in the as-rolled condition and should be annealed prior to machining.
It is not readily welded, but it can be welded by either the gas or arc
welding processes if the section involved is preheated and stress relieved
after welding.
52100 This
high carbon-high chromium alloy is produced by the electric furnace process
and then vacuum degassed to meet the rigid standards of the aircraft industry
for bearing applications. It develops high hardness and has exceptional
resistance to wear and abrasion. |
Metals and Plastics - Steel - Steel Information