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INFORMATION

Materials of Shears

The difference between Shozaburo shears and Western shears

The technology of Shozaburo Shears is from making Japanese Samurai swords. Because there are two layers of metal which is called "Metal Sandwich" , shears is easy to be adjusted, do not rust, and have excellent cut. On the other hand, western shears are mostly made of Single Metal which has one layer. They have good cut but are not adjustable, and are easy to get rusted. Shozaburo shears are marked orange and Western shears are marked green in the table below.

Steel Combination100% Blade Steel
Blade steel
+ Steel		Stainless
Blade Steel
+Stainless
Steel		100%
Blade Steel		100%
Stainless
Blade Steel		Cast Iron
Material
Blade steel:
c0.8%-1.2%
Soft steel:
c0.06%
Stainless
blade steel:
c0.9%-1.0%
Stainless
steel:
cr13%-16%
Blade steel:
c0.6%-0.8%
Stainless
blade steel:
c0.8%-0.9%
Stainless
steel:
cr13%-16%
Blade steel:
c0.5%-0.6%
Blade
Section
Handle:
Malleable
cast iron
Handle:
Malleable
cast iron
Handle:
Malleable
cast iron
Handle:
Malleable
cast iron
Handle:


Steel
Process
1.Welding
blade steel
and handle
2.Die forging
3.Heat
treatment
4.Grinding
5.Polishing
6.Sharpening
7.Adjusting
8.Coating
9.Inspecting
 same as left same as left
1.Shaping by
die forging
2.Heat
treatment
3.Grinding
4.Polishing
5.Adjusting
6.Coating
7.Inspecting
 same as left
Heat Treatment Hardening: 780oc-800ocQuenching: OilTempering: 150oc OilHardness: 62HRc
 Hardening: 1050ocQuenching: AirTempering: 180oc OilHardness: 60HRc
 Hardening: 780oc-800ocQuenching: OilTempering: 150oc OilHardness: 55HRc
 Hardening: 1050ocQuenching: AirTempering: 180oc OilHardness: 57HRc
 Hardening: 780oc-800ocQuenching: OilTempering: 150oc OilHardness: 55HRc
Characteristics
and
Properties
1. Very strong
and durable
2. Reformable
3. Excellent
cut
4. Rust easily
1. Very strong
and durable
2. Reformable
3. Excellent
cut
4. Rust
resistant
5. Wear
resistant
1. Very strong
and durable
2. Difficult to reform
3. Good cut
4. Rust easily
5. Can be
mass
produced
1. Very strong
and durable
2. Difficult to reform
3. Good cut
4. Rust
resistant
1. Very strong
and durable
2. Difficult to reform
3. Good cut
4. Rust easily