KVA Martensitic Stainless Steel Tube & Pipe

KVA Martensitic Stainless Steel (MSS) tube and pipe are low-cost, high performance substitutes for traditional carbon & stainless steels, titanium and 12Cr & 13Cr materials. KVA MSS™ is the patented, original and only fully martensitic, high toughness seam-welded tube, offering unsurpassed tensile strength, hardness and wear resistance.

KVA longitudinal seam-welded MSS™ can be produced fully hardened, fully annealed, or anywhere in between, at substantial cost savings over seamless type 410 or type 420 pipe! Typical properties of KVA MSS (UNS S41000):

It is important to note that KVA seam-weld technology effectively reduces the hardness of the weld, in both the fusion zone and the heat-affected zone. This reduction in hardness, and associated improvements in ductility, toughness and formability, allows air-hardenable martensitic stainless steels to be used in welded applications historically considered impractical.

In addition, KVA seam-weld technology does not limit the part from fully transforming into a homogenous, uniform microstructure after a solution heat-treatment. The base metal, heataffected zone and fusion zone all reach uniform properties after hardening.

KVA Martensitic Stainless Steel tubing is proudly Made in the U.S.A. and is produced in our state-of-the-art tubemaking facility in southern California. The following charts list our current size range capabilities:

Addtional sizes can be run at our partner mills ranging from 0.200" to 36" (5 - 914 mm) outside diameter and wall thicknesses from 0.008" to 0.500" (0.2 - 12.7 mm); subsquent drawing can be done to obtain any OD/wall and shape required. KVA can also process other corrosion resistant martensitic, precipation-hardening (PH) or difficult to weld grades as needed. Please contact us for details.

KVA MSS™ can be produced in lengths up to 40' or coiled to the following specifications:

• ASTM A268: Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
• ASTM A554: Standard Specification for Welded Stainless Steel Mechanical Tubing
• ASTM A999: Standard Specification for General Requirements for Alloy and Stainless Steel Pipe