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Producers of tube, pipe, and roll formed products are always looking for tooling materials that will give them the best results for the lowest cost.
Roll-Kraft has compiled a list of materials that are available today, along with where these materials are best suited for use on your mills. Please note that the list gives limited examples of locations on the mill that we believe the material is most commonly used. Please contact Roll-Kraft, so we can fully understand your expectations and discuss the advantages and disadvantages of using some of these unique materials.
A common misconception in the industry is that specific materials can solve specific problems. That can be true to a certain extent, but you need to be sure that your tooling supplier is asking the right questions and understands your expectations.
For instance, the definition of a “mark-free” product varies from producer to producer. If you are looking for a mark-free product, we ask to see a sample in order to understand your expectations. The current tooling material may be ideal, but mills that are set up incorrectly or misaligned can sometimes lead to product marking. The last thing we want to do is provide you with a very expensive material that you don’t actually need.
Most importantly, if the material is to be heat-treated, you must be certain it is done properly. The most expensive materials available today will not perform any better than the least expensive materials if they are heat treated improperly. Decreasing the duration of heat treatment is a way that tooling suppliers can cut corners and ultimately sell you less expensive tooling. If heat treating companies do not treat the material at their facility for the proper amount of time, it is less costly to them, which is less costly to the roll supplier. It is imperative that your tube, pipe, and roll form tooling is heat-treated properly.
Below is an extensive list of materials for roll tooling.
D2 - The most commonly used material for tube and pipe tooling
D4 / D5 / D6 - Choose higher grades of the D series for improved abrasion resistance compared to D2
M2 - A high-speed steel with more abrasion resistance than D2
M4 - Same as M2, except even higher quality material
DC53 - Another high-speed steel that is more wear and impact resistant than D2
REX 86 - A high-alloy material that has great wear characteristics, when used with certain materials
REX 20 – Cobalt-free material with great toughness and wear resistance
Maxamet – Similar to REX 86, but with 68-70 Rockwell “C” hardness
O1 – Oil hardened with lower carbon and good toughness
A2 – 5% chrome for good abrasion properties and toughness
S6 – General purpose tool steel with high strength and good toughness
S7 – High shock resistance, good strength, and ductility for cold and moderately high temperatures. Suitable for cold-work or hot-work applications less than 1,000 degrees
H13 – Good for hot work; good balance of toughness and heat check resistance
H10 – Contains molybdenum for increased strength and wear properties, compared to H13
L6 – General purpose tool steel with high strength and good toughness
CPM RexT-15 – Super high-speed steel with high vanadium content for excellent wear resistance, and cobalt for good red hardness
CPM 9V – Lower carbide and vanadium content than CPM10V
CPM 10V – Has a higher vanadium content for more wear resistance than D2
CPM 15V – More vanadium than CPM10V for even greater wear resistance
CRU-WEAR – Has less chrome and carbon than D2, but contains more vanadium and tungsten
Stainless steel – Has non-magnetic properties and non-marking in certain applications
Durabar – Cast iron
Meehanite – Cast iron
Aluminum Bronze 18 / 21 / 45 – Non-magnetic and non-marking
Aluminum Bronze 25 – Hardest of the bronzes for greatest life
Formamet – Similar to Ampco but with a finer grain structure for increased wear resistance
Carbide 6% Cobalt – Very hard for extreme abrasion resistance
Carbide 15% Cobalt – More binder than 6% Cobalt for increased toughness
Carbide 12% Nickel – The nickel binder is more resistant to chemicals than cobalt
Carbide 23% Nickel – More binder for increased impact resistance, but less wear resistance
Rene 95 – Superalloy for high strength, with high nickel content for excellent wear and heat resistance
Nylon – Used to form very soft materials that would mark using another tool steel
Urethane – Same as nylon, but with increased wear resistance
PC Plastic – Same as nylon
Rubber – Excellent grip characteristics
Ceramic – Non-magnetic material with extreme wear characteristics
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