A2 TOOL STEEL HRC54 versus HRC62

Data numbers in the table is the number of the impact roller cycles with the resulting sharpness.
E.g. “ x5 = 250, x10 = 300 “ means after 5 impact cycles the edge sharpness is 250 BESS, after 10 cycles 300 BESS, and so on.

All sharpened at 15 dps

A2 Tool Steel HRC54 →

Rolling

Steeling

Initial Sharpness

140

 

SHARPNESS

 

x5=340

 

x10=382

 

x15=402

 

x20=430

 

x25=437

 

x30=416

 

x35=421

 

x40=411

 

x45=431

 

x50=424

 

x60=800

 

x70=812

 

x80=793

 

x90=495

 

x100=541

 

Smooth 264

 

Smooth 291

 

Smooth 281

 

Smooth 305

 

Smooth 328

 

Smooth 384

 

Smooth 333

 

Smooth 342

 

Smooth 346

 

Grooved 199

 

Smooth 843

 

Smooth 711

 

Grooved 178

 

Smooth 439

 

Average 1-50

409

smooth 319

Average 60-100

688

smooth 664

Average Smooth Steel

 

492

Average Grooved

 

189

Overall Average

549

340


 

A2 Tool Steel HRC62 →

Rolling

Steeling

Initial Sharpness

129

 

SHARPNESS

 

x5=303

 

x10=297

 

x15=339

 

x20=335

 

x25=329

 

x30=391

 

x35=330

 

x40=340

 

x45=330

 

x50=341

 

x60=465

 

x70=412

 

x80=438

 

x90=447

 

x100=424

 

Smooth 260

 

Smooth 227

 

Smooth 219

 

Smooth 216

 

Smooth 212

 

Smooth 230

 

Smooth 291

 

Smooth 314

 

Smooth 296

 

Grooved 191

 

Smooth 243

 

Smooth 350

 

Smooth 376

 

Smooth 377

 

Grooved 176

Average 1-50

334

smooth 252

Average 60-100

437

smooth 337

Average Smooth Steel

 

295

Average Grooved

 

184

Overall Average

386

239