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Razor Blade Sharpness Comparison Chart

Razor Blade Sharpness Summary with Comparison Chart

This post is to serve as a quick reference as a Razor Blade Sharpness Summary which includes a Razor Blade Sharpness Comparison Chart.

To see more in depth how the testing works, check out Razor Blade Sharpness Testing, or you can check out the Razor Blade Sharpness Introduction.

Testing has been completed on the following Double Edge Razor Blades, you can click on the name to link to the full review.

Astra Superior Platinum

Astra Superior Stainless

BIC Chrome Platinum

Bolzano Superinox Inossidabile

Crystal

Derby Extra

Derby Premium

Feather

Gillette 7 O’clock Permasharp Stainless (Green)

Gillette 7 O’clock SharpEdge (Yellow)

Gillette 7 O’clock Super Platinum (Black)

Gillette 7 O’clock Super Stainless (Green)

Gillette Nacet Stainless

Gillette Platinum

Gillette Rubie (Platinum) Plus

Gillette Silver Blue

Kai

Merkur

Perma-Sharp Super

Personna Comfort Coated “Lab Blue”

Personna Platinum “Israeli Red”

PolSilver Super Iridium

Rapira Platinum Lux

Rockwell Razors

Shark Super Stainless

Treet “Black Beauty”

Voskhod

Wilkinson Sword (Made in Germany)

Wilkinson Sword (Gillette)

Razor Blade Sharpness Summary

A lower number is a sharper reading, for more information check out Razor Blade Sharpness Testing.

DescriptionSharpness
New Blade
Sharpness
After Shave 1
Sharpness
After Shave 2
Sharpness
Average
Astra
Superior Platinum
49464446
Astra
Super Stainless
43384040
BIC
Chrome Platinum
40333235
Bolzano Superinox Inossidabile52464949
Crystal44373840
Derby Extra
(Green)
53445149
Derby Premium51464648
Feather32404037
Gillette 7 O'clock
Permasharp Stainless
(Green)
45354241
Gillette 7 O'clock
SharpEdge
(Yellow)
46434244
Gillette 7 O'clock
Super Platinum
(Black)
45323638
Gillette 7 O'clock
Super Stainless
(Green)
45384041
Gillette
Nacet Stainless
39353837
Gillette
Platinum
45383941
Gillette
Rubie Plus
50454145
Gillette
Silver Blue
46413541
Kai
Stainless Steel
53423945
Merkur53514650
Perma-Sharp
Super
41303736
Personna
Comfort Coated
(Lab Blue)
48373540
Personna
Platinum
(Israeli Reds)
41373638
PolSilver
Super Iridium
46394042
Rapira
Platinum Lux
44383940
Rockwell Razors54515453
Shark
Super Stainless
47515651
Treet
Carbon
(Black Beauty)
52626961
Voskhod42413941
Wilkinson Sword
(German)
46333438
Wilkinson Sword
(Gillette)
43404141
7 am
Hi-Platinum
Dorco
ST-300 Platinum
Dorco
ST-301 Stainless
Ladas
Super Stainless
Lord
Super Stainless
Rapira
Stainless Chrome
Rapira
Super Stainless
Rapira
Swedish Super Steel
Schick
Premium
Shark
Super Chrome
Treet
7 Day Platinum
Treet
Classic
Treet
Dura Sharp
Treet
King Super Stainless
Treet
Platinum

 

Razor Blade Durability Summary

DescriptionDurability
/Edge Retention
After Shave 1
Durability
/Edge Retention
From Shave 1-2
Durability
/Edge Retention
From New to 2
Astra
Superior Platinum
0.940.960.90
Astra
Super Stainless
0.881.050.93
BIC
Chrome Platinum
0.830.970.80
Bolzano Superinox Inossidabile0.881.070.94
Crystal0.841.030.86
Derby Extra
(Green)
0.831.160.96
Derby Premium0.901.000.90
Feather1.251.001.25
Gillette 7 O'clock
Permasharp Stainless
(Green)
0.781.200.93
Gillette 7 O'clock
SharpEdge
(Yellow)
0.930.980.91
Gillette 7 O'clock
Super Platinum
(Black)
0.711.130.80
Gillette 7 O'clock
Super Stainless
(Green)
0.841.050.89
Gillette
Nacet Stainless
0.901.090.97
Gillette
Platinum
0.841.030.87
Gillette
Rubie Plus
0.900.910.82
Gillette
Silver Blue
0.890.850.76
Kai
Stainless Steel
0.790.930.74
Merkur0.960.900.87
Perma-Sharp
Super
0.731.230.90
Personna
Comfort Coated
(Lab Blue)
0.770.950.73
Personna
Platinum
(Israeli Reds)
0.900.970.88
PolSilver
Super Iridium
0.851.030.91
Rapira
Platinum Lux
0.861.030.89
Rockwell Razors0.941.061.0
Shark
Super Stainless
1.091.101.19
Treet
Carbon
(Black Beauty)
1.191.111.33
Voskhod0.980.950.93
Wilkinson Sword
(German)
0.721.030.72
Wilkinson Sword
(Gillette)
0.931.030.95
7 am
Hi-Platinum
Dorco
ST-300 Platinum
Dorco
ST-301 Stainless
Ladas
Super Stainless
Lord
Super Stainless
Rapira
Stainless Chrome
Rapira
Super Stainless
Rapira
Swedish Super Steel
Schick
Premium
Shark
Super Chrome
Treet
7 Day Platinum
Treet
Classic
Treet
Dura Sharp
Treet
King Super Stainless
Treet
Platinum

Make sure to vote for which blade you want to see tested next! Poll is located on the sidebar for desktop display and at the bottom of this post for mobile devices.

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For more information check out Razor Blade Sharpness Testing, or you can explore some product reviews!

4 comments

  1. engblom says:

    Thanks for the tests. I have been thinking about a similar test myself, but never got to do something.

    One thing is bothering me with the results. I have difficulties to accept a blade is getting sharper by shaving. Could it be that your test media is easier cut by a destroyed edge? From microscopic images of the edge I have seen a clear change in appearance, a used edge is less straight. It resembles more a saw with really small “teeth”

    I say this because with some of the blades you claim get sharper from a shave, I clearly experience more tugging when used a second or a third time.

    How about testing with some wool? Wool is after all hair…

    • refinedshave says:

      Hi Engblom, thanks for the comment. The test media I use is a consistent clip that is purchased from a sharpness testing company that uses a consistent string. Using wool I do not feel this variable would be as controlled.

      Regarding your comment about the edge being destroyed, I do not think this is the case. Check out this link from Mantic.

      This is for the Crystal blade, you can see the unused edge has a very thick coating. If you look at the edge after it is used, the edge does not appear to be damaged or have any saw like teeth. These images that Mantic was able to publish are using an SEM microscope and impressively high quality.

      Due to this I suggest the initial coating covers the sharp edge resulting in a lower reading, and as the coating is worn away it exposes the sharp edge for a sharper reading. I have also had lots of feedback from people confirming they often feel like the second shave is sharper than the first for many blades.

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