MATERIALS PAGE

These are the Materials most commonly used by RM Garrison for our frequently manufactured items:

METALS

Brass

• Non-magnetic
• Relatively resistant to tarnishing
• Low friction
• Corrosive resistant
• Electrical conductivity, and thermal conductivity (wear & spark resistant)

Naval Brass

Naval Brass shares the characteristics of regular Brass with one added benefit, it is primarily used where corrosion is important especially in or near seawater.

• Non-magnetic
• Relatively resistant to tarnishing
• Low friction
• Corrosive resistant
• Electrical conductivity, and thermal conductivity (wear & spark resistant)

Bronze

Copper is the main element of the alloy Bronze, with a high amount of tin added. Depending on the amount of copper-zinc, will depend on the type of application that works best, as a high level of copper content will allow the bronze to perform additional protection from corrosion in the form of patina, which is valuable for items that are exposed to moisture and other weather elements. The properties of Bronze that are most valuable are as follows:

• Hard
• Tough
• Strong
• Non-magnetic
• Corrosive resistant
• Electrical conductivity, and thermal conductivity (wear & spark resistant)
• Low friction

Aluminum

There are many types of Aluminum, based on the alloy added. When making an ounce per ounce comparison, Aluminum is a better conductor of heat and electricity than copper. Aluminum is the most abundant metal on Earth, and is highly used due to its characteristics:

• Electrical and thermal conductivity, and has the ability to be a super conductor
• Produces a natural protective oxide coating, making it corrosive resistant
• Light weight
• Great reflector of heat and light

The following is a list of Aluminum we are currently using. If there is another you would like to use that is not listed, please give us a call, and we will see if we are able to accomodate you:

6061 T6

The most common used Aluminum alloy. The characteristics of this metal make it a very versatile metal product:

• Strong
• Heat treatable
• Fairly easy to machine and weld
• Has the capability to be anodized

2011

• The most machineable type of Aluminum
• Provides a great surface finish appearance
• Not the strongest of the Aluminums
• Weldability is less than average
• Corrosion resistance is low
• Great for products that need to be completed rapidly, and do not require great strength

2024

• Copper is the main alloy ingredient, making is susceptible to corrosion, which would require a protective coating to help prevent
• Is not considered a weldable product
• Has a great fatigue resistance, making it able to handle high stress applications

7075

• Zinc and Copper are the main ingredients for this metal, making it one of the strongest aluminums available
• Good ratings on machinability
• Resistant to corrosion, and anodizing process
• Not considered an option for welding

Stainless Steel

Stainless steel alloys are corrosive resistant, at high temperatures are able to maintain high strength. Common additives include nickel, chromium, and molybdenum.

• Corrosion resistant - Does not naturally corrode, rust, or stain, when in contact with water, like ordinary steel does
• Contains a higher content of Chromium than Carbon Steel
• Does not conduct electricity well
• Can be welded; works best with dissimilar metals

The following is a list of Stainless Steel we are currently using. Let us know if there is one you would prefer to use that is not listed below:

300 Series

302

• Austerite is the primary phase
• Tough
• Ductile
• Non-magnetic
• Comprised of chromium and nickel
• Not hardenable by heat treating

304

• Non-magnetic
• Lower in carbon
• Used in high temperature applications
• Resistant to corrosive acids

316

• Recommended for welding
• Good for marine and low temperature environments

400 Series

17-4

• Age Hardened
• High Strength
• Corrosive resistance
• Weldable
• Cost Effective compared to high carbon steels

Nickel

Fifth most common element on Earth. Widely used in alloy based products, to make heat resistant products. Due to instability it is combined with other metals, providing additional strength and corrosion properties to them.

• Hard
• Malleable
• Corrosion resistant
• Ductile
• Magnetic
• Catalytic properties

Carbon Steel

Often used to describe steel that is not Stainless, and may include alloy steels. With the increase in carbon, when heat treated, steel has the ability to become harder and stronger. The negative impact of this is it also becomes less ductile (able to stretch into wire).

• Less expensive steel
• Weldable
• Very durable
• Fairly hard and easily annealed
• Can be magnetized
• Not good for structural uses
• Easily corrodes
• No special welding technique required
• Good electrical conductibility
• Slight flexibility

The following is a list of Carbon Steel we are currently using. Also included are some of the most common products made from Carbon Steel:

1215

• Smooth finish

1018

Most commonly available rolled cold steel

• Strong
• Slight ductibility
• Easy to machine
• Cold rolling process created a nicer surface finish compared to A36 Hot Rolled Steel, which is similar

1117

Used in Screw Machine processed for parts that require extensive machining and require tight tolerances, and a smooth finish. Has improved mechanical properties over 1212 Screw Stock

12L14

Lead is added to this alloy to enhance the machinability of the metal. The addition of lead does change the strength slightly

Alloy Steels

Consists of Low-Alloy and High-Alloy classifications, based on the amount of each element added.

The following is a list of Alloy Steel we are currently using. Also included are some of the most common products made from Alloy Steel:

4140

• Excellent strength to weight ratio
• May be case hardened

4340

• Ultrahigh-strength alloy
• High Nickel content, with chromium and molybdenum
• Heat treatable
• Deep hardenability/tough
• High ductility
• Strong
• Does not soften at elevated temps
• Responds well to heat treating
• Can provide good fracture  toughness when properly heat treated

8620

• Carburizing alloy steel
• Flexible during hardening treatments, enabling improvement of case/core properties

PLASTICS

The following is a list of Plastic we are currently using. Also included are some of the most common products made from Plastic:

Delrin, PVC, Nylon, ABS