Boston Centerless Now Distributing Carpenter Custom 630 (17Cr-4Ni) Stainless

Woburn, MA — Boston Centerless announced today that it is the exclusive distributor of Custom 630 (17Cr-4Ni) stainless produced by Carpenter Technology Corporation. This material is designed for use with CNC Swiss screw machines. The machinability of Custom 630 stainless has been enhanced compared to standard 17Cr-4Ni stainless resulting in better feeds and speeds for machining, thus increasing productivity.

Custom 630 (17Cr-4Ni) is a high strength, corrosion resistant material. This product is an addition to the Project 70®+ PDB® stainless family of machining bar products. Boston Centerless has been the exclusive distributor of the Project 70+ PDB materials, which include Type 303, Type 304, Type 316 and Type 416 stainless, since April 2013.

These materials are precision drawn to close tolerances and do not require grinding. They are engineered for optimal productivity in CNC Swiss screw machine applications. Nominal diameters ranging from .250" to .625" are in stock and available for immediate shipment from one of Boston Centerless’ distribution centers located in New England and Minnesota. Boston Centerless can supply trial packs of each material from the Project 70+ PDB stainless group.

"We are very pleased to be partnering with Carpenter Technology on the offering of Custom 630 (17Cr-4Ni)," said Steven Tamasi, CEO. "The Project 70+ PDB materials are a great option for customers looking to get material that is readily available in precision tolerances for their machining operations."

Boston Centerless is an industry leader in the supply of precision ground bar materials for close tolerance machining applications to a variety of industries. The company also provides grinding services for customer-supplied material and components as well as manufactures a line of ultra-precise gages. For more information, visit

Media Contact:

Doug Perilli

Boston Centerless


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