Choose from a multitude of grades included in our broad selection of precision ground stainless steel bar stock
Boston Centerless processes a wide variety of stainless steel grades including austenitic, martensitic, precipitation hardening and maraging grades. Many of these are readily available to order from our large inventory. For the hardenable grades, Boston Centerless will provide the material in the heat treated or aged condition up to your specifications. We are experts at sourcing raw stainless steel bar as well as many other materials.
Boston Centerless stainless steel bars support the production of high-performance components in the contract manufacturing, automotive, and defense industries. Stainless steel bar stock is utilized for mission-critical components such as fuel system parts, braking components, solenoids, and structural components. Manufacturers rely on these precision ground bars to improve machining efficiency, ensure repeatability, and maintain consistent quality across high-volume production.
Stainless steel is an alloy of iron that contains chromium and other elements exhibit superior strength and excellent corrosion resistance. These properties typically result in lower maintenance and a longer life span for stainless products. While there are many variants, there are 5 general categories of raw stainless steel which we primarily work.
These metals, namely 304, are the most common stainless steel alloys. Austenitic metals contain a high amount of nickel, chromium, and molybdenum. This chemistry results in an alloy known for malleability, corrosion resistance, strength, and versatility. Austenitic stainless steels are also able to tolerate high temperatures and heavy loads. These metals are known for formability and weldability, making them a good fit for a variety of applications including automotive, aerospace, construction, petrochemical, and marine.
This variant contains a greater amount of chromium, with little to no nickel and few carbon consistencies. Ferritic stainless steels are magnetic and deliver excellent resistance to temperature oxidation and stress corrosion cracking. These metals work well at elevated temperatures and are common in automotive, petrochemical, and food processing applications.
This variant is structurally similar to ferritic but contains a greater amount of carbon. This chemistry enables martensitic metals to be hardened to yield a higher strength. For example, martensitic 440 stainless steel is one of the strongest alloys available. In general, martensitic metals are not as corrosion resistant as austenitic types. Martensitic stainless steels are often used in surgical instruments, medical tools, firearms, cutlery, and scissors.
This variant combines the desirable properties of ferritic and austenitic metals – and is considered the best of both worlds. Duplex is incredibly strong while delivering excellent resistance to corrosion and stress corrosion cracking. Its higher strength often enables appreciable part weight reductions. Duplex metals are often employed in demanding environments such as pressure vessels, impellers, pipes, mining equipment, and food processing applications.
These are called high strength stainless steels and achieve their properties through heat treatment. These materials deliver the superb corrosion resistance of austenitic stainless steel combined with a hardened strength similar to martensitic metals. Precipitation hardening metals are often utilized in chemical, aerospace, petrochemical, and food processing applications.
These are just a few of the stainless steel alloys that we work with:
*Hardenable stainless steels are also available in heat-treated or aged condition.*
Don’t see the material you need? Visit our materials page or download our material guide. We can procure many other steels not listed above. Contact Boston Centerless to inquire about your stainless steel material of choice.
At Boston Centerless, we have been in the precision machining industry for many years and have established a strong supply network built on long term relationships with various mills and material suppliers. We are committed to providing reliable precision materials and only buy materials from the US or EU to ensure the material quality meets our standards. Due to our ability to process high volumes, our team is able to achieve economies of scale and attain a constant flow of incoming supply. This allows us to be more nimble and help our customers adjust to fluctuating market conditions, as well as changes in their own customer demand. At Boston Centerless, we know the value of a robust and healthy supply chain, a resource which is truly priceless. We encourage our customers to leverage our expertise and our vast network for their material acquisition, whether they need raw stainless steel or another one of our material offerings.
We’ve answered your top questions about stainless steel. Want to know more? Contact us today.
Boston Centerless supplies a wide range of stainless steel grades including austenitic (300 series), ferritic (400 series), martensitic (400 series), duplex stainless steels, and precipitation hardened stainless steels. Common grades include 303, 304/304L, 316/316L, 410, 416, 420, and 440C. These materials are available as precision ground bar stock and can be supplied in heat-treated or aged conditions depending on the alloy and application.
Austenitic stainless steel (300 series) is known for excellent corrosion resistance, formability, and weldability, making it the most commonly used stainless steel type. Martensitic stainless steel (400 series) contains higher carbon content and can be hardened through heat treatment to achieve greater strength. Ferritic stainless steel also belongs to the 400 series and provides good oxidation resistance and magnetic properties but typically has lower corrosion resistance than austenitic grades.
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