PB
Swedish steel doctor blades
Six steel grades, each with a published composition, hardness and tensile strength.
Published figures
Swedish steel doctor blades
The doctor blade is the part that decides how much ink stays in the anilox cell and how much is wiped away — so its edge, its hardness and its straightness show up directly in the print.
PrimeBlade manufacture from Swedish steel and publish the full specification for each grade: the chemical composition, the hardness, the tensile strength and the straightness tolerance. That makes the grades genuinely comparable rather than a matter of trusting a description.
Grade comparison
| Grade | Available thickness | Hardness | Tensile strength | Straightness |
|---|---|---|---|---|
| PrimeBlade 300 | 0,076 mm – 0,38 mm (0,0030″ – 0,015″) | 590 HV | 1960 N/mm² | 1,4 mm/3000 mm (0,055″/118″) |
| PrimeBlade 400 | 0,15 mm – 0,38 mm (0,0059″ – 0,015″) | up to 600 HV | 1910 N/mm² | 1,4 mm/3000 mm (0,055″/118″) |
| PrimeBlade 500 | 0,076 mm – 0,30 mm (0,003″ – 0,012″) | up to 600 HV | 1910 N/mm² | 1,4 mm/3000 mm (0,055″/118″) |
| PrimeBlade 600 | 0,076 mm – 0,30 mm (0,003″ – 0,012″) | up to 630 HV | 2100 N/mm² | 1,4 mm/3000 mm (0,055″/118″) |
| PrimeBlade 700 | 0,15 mm – 0,20 mm | 850 – 900 HV (coated surface only) | — | 1,0 mm/3000 mm |
| PrimeBlade 800 | 0,15 mm – 0,20 mm (0,0059″ – 0,00787″) | 650 HV | 2100 N/mm² | 1,0 mm/3000 mm (0,039″/118″) |
Figures as published by PrimeBlade for each grade. Grade 700 is a coated blade — its hardness figure refers to the coated surface only.
Steel composition
| PrimeBlade 300 | C 1.00%, Si 0.30%, Mn 0.40% |
|---|---|
| PrimeBlade 400 | C 0.38%, Si 0.45%, Cr 13.50%, Mo 1.0%, Mn 0.55% |
| PrimeBlade 500 | C 0.65%, Si 0.30%, Cr 13.00%, Mn 0.55% |
| PrimeBlade 600 | C 1.00%, Si 0.25%, Cr 1.40%, Mn 0,30 % |
| PrimeBlade 800 | C 0.55%, Si 1.00%, Cr 2.60%, Mn 0.75%, Mo 2.25%, V 0.85% |
Chemical composition as published per grade. Grade 700 is defined by its coating rather than a published composition.
What each grade is for
PrimeBlade 300
Our basic high quality carbon steel blade, used at printing houses worldwide. Consists of genuine Swedish steel optimized for print quality and high press speed. Developed together with our raw material suppliers and end users.
- High quality Swedish steel
- Good wear resistance
- Optimized print quality
PrimeBlade 400
If blade corrosion is your main issue, then PrimeBlade 400 is our answer, our most corrosion resistant doctor blade. The moderate carbon content, while high enough to allow for an appropriate hardening, allows for retention of chromium where it is most needed, i.e., for corrosion protection. Addition of molybdenum further enhances the anti-corrosive properties of this blade.
- Excellent corrosion resistance
- Corrosion protection from both chromium and molybdenum
- Balanced carbon content
PrimeBlade 500
Our standard martensitic stainless steel, with a medium-high carbon content and an optimized trade-off between hardness, abrasive wear resistance and corrosion resistance.
- Excellent performance for water-based inks
- Very good corrosion resistance
- Optimized for wear resistance
PrimeBlade 600
Our finest Swedish carbon steel, with a high carbon content and excellent carbide particle microstructure. The microstructure has been refined by a small addition of chromium and by consecutively optimizing the heat treatment.
- Increased print quality and blade lifetime
- Less risk of metal hair formation and burr
- Balanced hardness to limit wear on rollers
PrimeBlade 700
The PrimeBlade® 700 series is our coated doctor blade, developed by combining our unique edge preparation and surface treatment technologies. This guarantees excellent bonding between steel and coating, providing the highest level of wear resistance. The uniquely smooth surface finish of the blade translates to a clean and smooth wipe, which gives excellent print quality.
- Excellent print quality -Excellent performance for all ink types, water or solvent based inks
- Good for abrasive inks
- Reduced friction between blade and cylinder
PrimeBlade 800
When it comes to low- to medium-alloyed tool steels, PrimeBlade 800 is as good as it gets. The microstructure of the steel consists of evenly distributed and very small carbide particles, originating from the molybdenum and vanadium additions, giving it an exceptional wear resistance and performance better than many alternatives.
- Excellent wear resistance
- Perfect for abrasive inks
Where these are used
PrimeBlade in Pakistan — through K Group
K Group is PrimeBlade's appointed distributor for Pakistan, listed on PrimeBlade's own distributor network as Intercom Trade Services (Pvt) Ltd, a K Group company. Tell us your press, your ink system and the anilox you are running, and we will specify the grade, thickness and edge profile.
Related machines
Polymer & containment blades
The 100 series in polyester and UHMW for chamber systems.
900 Nano series
Patented Nano treatment for reduced wear and longer blade life.
Blade edge profiles
Profile 10, 25, 50 and 55 edge geometries for flexo and gravure.
Works well with
- Ceramic anilox rollers (Zecher) — The anilox rollers these blades wipe against.
- MIRAFLEX II (Windmöller & Hölscher) — CI flexo presses running these blades.
- Colorsat ink dispensers (GSE Dispensing) — Dispensing the inks these blades meter.
Interested in PrimeBlade swedish steel doctor blades?
Speak to our machinery specialists in Pakistan for a tailored quotation.
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