SG2 / R2 — Super Gold 2
Description
SG2 (Super Gold 2 / R2) is Takefu's flagship PM stainless at 63-64 HRC. Ultra-fine carbides for top-tier professional hair scissor performance.
SG2 / R2 — Super Gold 2
Quick look
- Hardness window: 63–64 HRC from Takefu Special Steel powder metallurgy process.
- Toughness: PM carbide distribution keeps the steel remarkably tough for its extreme hardness.
- Corrosion profile: 14–16% chromium with molybdenum boost; excellent resistance to salon chemicals and humidity.
- Weight/feel: Standard stainless density but with a distinctly crisp, refined closure feel from the uniform carbide matrix.
Why it matters
SG2—スーパーゴールド2 (Sūpā Gōrudo Ni)—is Takefu Special Steel’s flagship powder metallurgy stainless, also marketed as R2. Powder metallurgy (PM) changes everything about how carbides form: instead of the coarse, unevenly distributed carbides found in conventionally cast steels, PM processing atomizes molten steel into fine powder, then consolidates it under heat and pressure. The result is a microstructure with extremely fine, uniformly distributed carbides throughout the matrix. For scissors, this translates directly into edges that are simultaneously harder, tougher, and more polishable than anything achievable through conventional casting at the same carbon content. Joewell uses SG2 in their FX PRO series—a direct statement that this steel competes at the top of the professional shear market.
Composition breakdown
SG2 runs 1.25–1.45% carbon, 14–16% chromium, 2.5–3.0% molybdenum, and 1.8–2.2% vanadium. The high carbon drives the 63–64 HRC hardness ceiling. The generous molybdenum content (far exceeding ATS-34’s ~4%) creates molybdenum carbides that resist wear and add thermal stability. Vanadium at 1.8–2.2% refines the grain structure and creates vanadium carbides that are among the hardest in any stainless alloy. The PM process ensures these carbides are microscopic and evenly spaced rather than clustered—eliminating the weak spots that cause conventional high-carbon steels to chip.
Shear pairing & edge compatibility
- Premium convex 5.5–6.5 in cutters: The uniform PM carbides take and hold a mirror-polished convex edge that glides through dry slide work.
- Joewell FX PRO series: The benchmark pairing—SG2 in a precision-ground convex blade designed for advanced cutting techniques.
Technique map
- Advanced dry slide cutting and channel work where edge keenness must last through marathon editorial sessions.
- Precision point cutting and texturizing where the fine carbide matrix keeps the tip geometry intact.
- High-end salon services where the stylist needs a single tool that performs at the highest level across multiple techniques.
Real-world stress tests
- Edge retention: Expect 1,400–1,800+ salon cuts (~7–10 weeks at 25 cuts/day) before service is needed. The PM carbide distribution significantly outperforms conventional steels at the same hardness—comparable to cobalt alloys but with better corrosion resistance.
- Impact/drop resilience: Better than expected for 63–64 HRC. The PM process eliminates the carbide clusters that act as crack initiation points in conventional steels, so SG2 resists chipping better than its hardness number would suggest. Still, dropping a 64 HRC blade on tile is never advisable.
- Weight & in-hand feel: Standard stainless density around 7.7 g/cm³, but the closure feel is distinctive—crisp, smooth, and almost frictionless thanks to the polished PM surface.
Maintenance notes
Rinse and dry after chemical services; the high chromium and molybdenum handle routine moisture but concentrated bleach or perm solution should not sit on the blade. Oil pivots weekly and maintain neutral tension. Schedule professional sharpening every 4–6 months even in high-volume salons—SG2’s edge longevity means less frequent service, but when it does need work, use a sharpener experienced with PM steels. The fine, hard carbides require proper abrasive selection; aggressive wheels can pluck carbides from the matrix rather than polishing them.
How it compares
| Steel | HRC | Corrosion | Edge Retention | Sharpening | Price Tier |
|---|---|---|---|---|---|
| SG2/R2 | 63–64 | Excellent | Excellent | Difficult | Premium |
| Nano Powder Metal | 62–65 | Excellent | Outstanding | Specialist | Ultra |
| VG-10 | 59–63 | Very good | Very good | Moderate | Mid–Premium |
| HYS (Hayashi) | 63–64 | Very good | Excellent | Difficult | Premium |
| ATS-314 | 60–62 | Very good | Excellent | Difficult | Premium |
Trade-offs
- Premium pricing—SG2 shears command top-tier prices, reflecting both the steel cost and the precision required to grind PM blanks.
- Demands a PM-experienced sharpener; conventional sharpening techniques can damage the microstructure.
- The extreme hardness means the steel is less forgiving of misuse—lateral torque or prying can crack rather than bend.
- Limited maker availability; not every shear brand has access to Takefu’s PM blanks.
Sources
Related: VG-10 • Steel Types • Edge Types • Scissor Maintenance