The performance of a knife is defined by three things:                              Steel quality

 Hardness
Edge geometry
 

Hardness: ~60–61 HRC
Type: Stainless

VG10 is one of the most widely trusted Japanese knife steels.

Why it’s popular:

✔ Excellent edge retention
✔ Can be sharpened very fine (around 15° per side)
✔ Good corrosion resistance
✔ Reliable and versatile

Ideal for:

Home cooks and professionals who want strong performance without high maintenance.

VG10 is often the best balance between sharpness, durability, and ease of care.

Hardness: ~62–64 HRC
Type: Stainless (Powder metallurgy)

SG2 (also called R2) is a high-end powdered steel.

Powder metallurgy creates a finer, more uniform grain structure.

This allows:

✔ Higher hardness
✔ Longer edge retention
✔ Extremely sharp edges
✔ Better wear resistance

Ideal for:

Serious enthusiasts and professionals who want maximum edge retention and precision.

More premium. More performance.

Hardness: ~64–67 HRC
Type: Stainless (high carbon stainless)

ZDP-189 is one of the hardest stainless steels used in kitchen knives.

What that means:

✔ Exceptional edge retention
✔ Extremely high hardness
✔ Can hold a razor edge for a very long time

But:

• More brittle than VG10
• Requires proper cutting technique
• Not ideal for twisting or heavy bone contact

Ideal for:

Experienced users who want maximum performance and understand proper knife care.

Hardness: ~62–63 HRC
Type: Stainless

STRIX is a newer Japanese steel designed to improve corrosion resistance while maintaining high performance.

Benefits:

✔ Excellent rust resistance
✔ Strong edge retention
✔ Balanced toughness
✔ Lower risk of chipping compared to ultra-hard steels

Ideal for:

Cooks who want premium performance with extra corrosion protection.

STRIX is becoming increasingly popular as a modern alternative to VG10.

Hardness: ~57–59 HRC

AUS-8 is a solid, reliable stainless steel often used in more accessible Japanese knives.

Benefits:

✔ Easy to sharpen
✔ Good toughness
✔ Lower cost
✔ More forgiving

Ideal for:

Beginners or those who prefer easier maintenance and durability over extreme sharpness.

These steels are not fully stainless and will develop a patina over time.

They require more care but reward with incredible sharpness.

Hardness: ~60–64 HRC
Type: High carbon (non-stainless)

White steel is known for:

✔ Exceptional sharpness
✔ Very clean edge
✔ Easy sharpening
✔ Traditional Japanese performance

But:

• Can rust if not dried properly
• Requires more care

Ideal for:

Purists and traditionalists who value sharpness above all.

Hardness: ~61–65 HRC
Type: High carbon (non-stainless)

Blue steel contains additional alloying elements compared to White steel.

Benefits:

✔ Better edge retention than White steel
✔ Strong cutting feel
✔ Traditional craftsmanship

Still requires drying and maintenance.

Ideal for:

Experienced users who want traditional performance with longer edge life.

HRC (Rockwell Hardness) measures how hard the steel is.

Lower HRC (55–58):
• Tougher
• Less brittle
• Dulls faster

Mid HRC (60–62):
• Balanced performance
• Long edge retention
• Good durability

High HRC (63+):
• Extremely sharp
• Long-lasting edge
• More brittle
• Requires proper technique

Harder is not always better.

Balance is key.

If you want:

Low maintenance + strong performance → VG10 or STRIX
Maximum edge retention → SG2 or ZDP-189
Traditional razor sharpness → White or Blue steel
Budget-friendly reliability → AUS-8

Still unsure?

Visit Sharp Knives Malta for expert advice and in-store guidance.