Skh51 Round Bar Size Chart And How To Pick The Right Diameter For Your Tool Shop - China

SKH51 Round Bar – Full Size Range, Tolerances And Machining Advice From A 20-Year Mill Supplier When tool shops source SKH51 round bar (JIS standard, equal to AISI M2, DIN 1.3343 and GB W6Mo5Cr4V2), the three questions that decide the final cost are diameter range, surface condition and tolerance.

Getting these right at the inquiry stage avoids rework, scrap and delivery delays later.

Standard SKH51 round bar size range we carry:

- Black forged rounds: dia 16 – 300mm, length 2000 – 4000mm

- Peeled / turned rounds: dia 10 – 200mm, length 2000 – 3000mm

- Centerless ground rounds: dia 3 – 80mm, h7 / h8 tolerance on request

- Special diameters and step bars available via custom forging (15–25 days) How to choose the right diameter:

1 - For drills and end mills: start with ground stock 0.3–0.5mm oversize so heat treatment growth is absorbed.

2 - For punches and pins: peeled rounds with h8 tolerance reduce your turning allowance and machining hours.

3 - For die inserts and holders: black forged rounds cost less per kg — machine away the decarb layer after your lathe setup.

4 - For saw blades and slitting tools: consider flat bar instead of round bar to cut material waste.

Surface and internal quality: every bar is annealed to HB max 255, ultrasonic tested for internal soundness above 50mm, and marked with heat number for full traceability.

Mill certificates issued per shipment; SGS third-party inspection available on request.

Cutting service: bars can be cut to your exact length with saw cutting, saving your floor time and freight cost.

Tell us the diameter, tolerance class and quantity you need — our sales engineers will confirm stock position and the best shipping plan within 12 hours.

Songshun specialized in Special Steel for almost 20 years.

We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.

Welcome your contact 24 hours a day!!

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

• Email:

• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
  After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.
  
  Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service.
  
  Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.
  
  Songshun specialized in Special Steel for almost 20 years.
  
  We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.
  
  Welcome your contact 24 hours a day!!!
  
  Skype/Whatsapp/We chat: +86-18269260283
  
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