Extramarise II Cobalt Alloy
Extramarise II Cobalt Alloy
Quick look
- Hardness window: 60–62 HRC with the second-generation Extramarise sub-zero treatment.1
- Toughness: Denser cobalt matrix grips alignment in longer blades while staying forgiving when tension drifts.1,2
- Corrosion profile: Stainless/cobalt blend resists colour bowls, humidity, and daily sanitation cycles.1,2
- Weight/feel: Slightly firmer closing feel than Extramarise I—ideal for barbers and stylists running longer stroke work.1
Why it matters
Extramarise II takes the silky feel of generation I and adds backbone. Mizutani uses a tougher cobalt stainless and the same sub-zero cycle to stabilise longer blades, so dry-texture specialists get stainless insurance without giving up that signature low-friction close.1,2
Shear pairing & edge compatibility
- Long-blade convex cutters (6.0–7.0 in): Extra rigidity keeps edges tracking straight during scissor-over-comb passes.1
- Swivel and offset handles: Reinforced matrix holds alignment when articulation adds lateral load.1
Technique map
- Barbering and men’s work relying on extended over-comb strokes and clean perimeter finishing.
- Dry texture and slice techniques on medium-to-coarse densities where a touch more backbone helps control.1
- Salon rotations that bounce between chemical services and dry detailing.2
Real-world stress tests
- Edge retention: Similar to Extramarise I—plan 1,000+ service-quality cuts before you feel drag if maintenance is on schedule.1,2
- Impact/drop resilience: Cobalt structure resists catastrophic chips; rolled spots can usually be reset with skilled sharpening.1
- Weight & in-hand feel: Slightly firmer close and added torsional stability keep tension consistent on longer blades.1
Maintenance notes
Wipe, oil, and tension the pivot daily. Extramarise II tolerates heavy workloads but still deserves cobalt-capable service roughly every 9–12 months (or sooner for dry-texture specialists). Store in padded cases to keep the edge from collecting micro-dings.1,2
Industry snapshot
- Mizutani Sword Wood Series: Uses Extramarise II to give long convex blades enough stiffness for barbers and dry cutters who need confident stroke control.1
Trade-offs
- Still pricier and more delicate than mainstream stainless—budget service time and insurance accordingly.1
- Needs disciplined tension management; over-tightening can leave flat spots on the cobalt surface.1
- Edge life, while excellent, won’t match nano-powder steels for extreme slide work.1,2
Sources
Related: Extramarise I • Stellite Alloy • Scissor Maintenance