Stellite Alloy
Stellite is a family of cobalt-base alloys with different numbered grades and compositions. Mizutani also uses Stellite Alloy as a scissor-range name. A useful specification distinguishes the industrial alloy, its processing condition and the named finished model; the family label alone does not supply a scissor hardness or service interval.
Read a steel claim as a four-layer record
A grade can be useful evidence, but a finished shear adds maker execution, geometry, condition, and service history. Apply to Stellite Alloy
- 01 Identify the grade Use a producer or traceable maker designation.
- 02 Name the source layer Separate mill data, maker data, seller copy, and measurement.
- 03 Record execution Heat treatment, geometry, assembly, and finished-blade values stay model-specific.
- 04 Keep the history Condition, use, care, impacts, and service affect the working edge.
Do not inferOne element, HRC value, country adjective, price tier, or steel name cannot rank sharpness, toughness, corrosion resistance, or service life.
Quick look
| Term on a specification | What it establishes |
|---|---|
| Stellite | An alloy family requiring a more specific grade for a material comparison |
| Stellite 6 or Stellite 12 | A numbered producer grade with its own published chemistry and hardness |
| Mizutani Stellite Alloy | A maker’s scissor range with named cutting and thinning models |
| A finished-model hardness test | Evidence about an identified tool and condition, if supplied |
Kennametal’s Stellite catalog describes cobalt-base alloys with chromium and varying carbon, tungsten and/or molybdenum. Those variations matter: one family name does not stand for one chemical recipe.
Why it matters
Two published grades illustrate the distinction. The following values are producer material ranges, not measurements of Mizutani scissors.
| Kennametal grade | Carbon, mass % | Tungsten, mass % | Published hardness |
|---|---|---|---|
| Stellite 6 | 0.9–1.4 | 3–6 | 36–45 HRC |
| Stellite 12 | 1.4–2.0 | 7.5–9.5 | 45–51 HRC |
Both entries list chromium at 27–32% and cobalt as the base. The different ranges demonstrate why a hardness copied from an industrial datasheet needs its grade attached. They do not identify which grade a scissor uses, establish a supplier relationship or predict its finished edge performance. The composition guide explains how to read a partial chemistry table without inventing the balance.
Mizutani’s Stellite Alloy range
Mizutani’s global material catalog connects the name to concrete products. It lists cutting models 555 and 560, as well as thinning models including 230 and 231. The latter pair is presented in regular and reverse configurations respectively, each with a stated cutting ratio of 25–30%.
That is useful model information. It does not publish the numbered Stellite grade, a full composition or a finished-model hardness. Preserve those gaps when comparing the scissors with another brand; filling them from Stellite 6 or 12 would create a specification the scissor maker has not supplied.
Compare complete scissors
A cutting scissor and a thinning scissor can share a range name while having different blade and tooth geometry. Check the actual model, length, handedness, handle arrangement and intended operation. For thinning models, keep the maker’s stated ratio attached to that model rather than treating it as a fixed percentage of hair removed in every pass.
Technique map
Use the product configuration to build a shortlist. A conventional cutting model and a reverse thinning model answer different working needs even if their material labels match. Then assess access, visibility, finger position and control in the intended technique. An alloy name cannot substitute for these observations.
Performance claims and comparison conditions
Mizutani promotes the range’s cutting feel and durability. Those descriptions explain its positioning, but the cited catalog supplies no controlled cutting-life or drop test. A defensible comparison would name the competing models, edge condition, cutting task and assessment method. It would also distinguish wear during normal use from damage caused by impact or incorrect adjustment.
Maintenance notes
Follow the exact maker’s cleaning, drying, lubrication and service instructions. Keep blades protected in storage and seek assessment after a drop or a change in cutting action. A cobalt-base identity does not establish compatibility with every cleaning chemical, a maintenance-free pivot or a predictable damage mode.
Keep family names separate
Hayashi Pure Cobalt and Joewell CBA-1 are other documented cobalt-base material names. That shared classification does not make them Stellite equivalents. Record each maker’s actual designation and evidence instead of grouping them under an assumed common grade.
Trade-offs
Stellite documentation can be detailed at the industrial-grade level while leaving the exact scissor material unspecified. Use the available product facts to judge fit and service options, and request the missing grade or condition when it is important to the decision. Price, origin and material-family reputation cannot supply that missing specification.
See Also
Cobalt alloy terminology · Hardness guide · Cobalt-labeled scissors
Sources
1 source- 🌐 Mizutani Scissors — Global (Japan HQ) (manufacturer official)
Frequently Asked Questions
3 answers you can open one at a timeWhat is Stellite in hair scissors?
Stellite names a cobalt-base alloy family. Mizutani also uses Stellite Alloy for a scissor range, but its cited material page does not identify the numbered industrial grade used in those scissors.
Does Stellite have one hardness?
No. Kennametal publishes different hardness ranges for different Stellite grades. These producer figures should not be assigned to a Mizutani scissor unless its exact grade and finished condition are documented.
How often do Stellite scissors need sharpening?
The cited material sources do not establish a universal interval. Follow the exact scissor maker’s care instructions and arrange appropriate service when cutting action changes.
Comments & questions
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