What does AMS material mean?

AMS stands for Aerospace Material Specifications that are established by the Society of Automotive Engineers or SAE. AMS specifications are compiled in a comprehensive database of individual directives that standardize procedures, equipment and processes related to aerospace material processing.

What is AMS metal?

AMS’ metal fabrication division is your all-in-one solution for all of your metal fabrications needs. We specialize in fabricating a variety of metals that includes stainless steel, aluminum, structural metals, and others.

What type of material is 4140?

alloy steel
4140 steel is a chromium, molybdenum, manganese low alloy steel plate that is known for its toughness, high fatigue strength, and high torsional strength.

What is the difference between AMS and ASTM?

ASTM bar is extruded, AMS is extruded/drawn. A final product made from either ASTM or AMS bar offers identical properties (strength, corrosion resistance, etc.) to the customer. AMS bar, though more expensive (?), is better suited for precision machining.

What does 4140 stand for?

molybdenum steel
4140 Grade Designation

Number	Meaning
4	Designates that 4140 steel is molybdenum steel, indicating that it possesses higher amounts of molybdenum than other steels, such as the 1xxx series.
1	Designates that 4140 steel has additions of chromium as well; more so than 46xx steel for example.

Is 4140 a stainless steel?

4140 is a chromium and molybdenum alloy steel that has an excellent weight to strength ratio. It is considerably stronger than standard steel. Although it is chromium steel and often referred to as “chromoly steel” it does not contain as much chromium as stainless steel.

What is the difference between ASM and ASTM?

ASME standards will establish the dimensions and tolerances for most commonly used items with respect to each material class, whereas ASTM establishes quality for materials which are to be used in products which are described in ASME.