What kind of material is 4130?
Aircraft quality 4130 alloy steel is a medium carbon, low alloy steel containing 0.15/0.25% molybdenum and 0.80/1.10% chromium as strengthening agents. This type of steel is also commonly referred to as a chromoly steel, or chrome moly steel.
What does the designation of SAE 4130 mean?
A. 4130 is a designation for a steel alloy that contains chromium and molybdenum among other elements. The exact composition range is defined in the standard SAE J404 [affil. The “41” denotes a low alloy steel containing nominally 1 percent chromium and 0.2 percent molybdenum (hence the nickname “chromalloy”).
How do you weld AISI 4130?
4130 chrome-moly can be welded with the TIG or MIG process. Preheat is generally not needed for thinner sections (0.120-in), but for tubing larger than 0.120 a 300F-400F preheat is needed to obtain acceptable results. A common filler metal choice for welding chrome-moly is ER80S-D2 .
What is the carbon equivalent of AISI 4130?
0.28 – 0.33% Carbon.
Do you need to heat treat 4130 after welding?
basically speaking 4130 has a high carbon content therefore the need for heat treatment is much higher than mild steel. it would be best to pre heat the material to prevent as much shrinkage and warpage as possible during the cooling process, then post weld heat treat the whole part.
What kind of steel is in AISI 4130?
US ASTM AISI and SAE Standards AISI 4130 Chromoly Steel (UNS G41300) AISI 4130 steel (UNS G41300), also known as 4130 Chromoly steel, is a chrome-molybdenum series low alloy steel with high strength, toughness and hardenability, usually used in quenched and tempered condition.
What should the temperature of 4130 alloy be?
4130 alloy steel is typically normalized at 900 °C (1650℉), and should be cooled at a specified temperature in still air.
What kind of arc welding is used for 4130 steel?
Welding 4130 Steel All common arc welding processes, such as (SAW, SMAW, FCAW, GMAW, GTAW) can be used to weld 4130 alloy steel, but in order to prevent cracking, it must be preheated to 150-290 °C before welding, preheating interpass temperature depends on the section thickness of the steel.
Which is better 4140 steel or 4130 steel?
It is similar to 4140 steel which has a higher carbon level (0.28-0.33%), giving 4130 material improved weldability, at the expense of through thickness strength. With the proper heat treatment it is also readily machined. Annealing ASTM 4130 alloy steel offers excellent ductility.