• O1 Tool Steel round bar
  • O1 Tool Steel forging
  • O1 Tool Steel sheet
  • O1 Tool Steel flat bar
  • O1 Tool Steel pipe
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O1 Tool Steel

We can produce O1 Tool Steel stainless steel round rods, O1 Tool Steel forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control O1 Tool Steel chemical composition and O1 Tool Steel mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Production specification

Round bar steel: 1mm to 3500mm
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.

O1

BS4659 BO1 is a high quality non-distorting cold work steel/" target="_blank" class="keylink">tool steel. With combined manganese chromium tungsten O1 steel/" target="_blank" class="keylink">tool steel is characterised by giving high surface hardness after tempering, good dimensional stability in hardening, and good
machinability.
 
 

 

 Typical Analysis - O1 Tool Steel

 C.

Mn.

Cr

W. 

V. 

 0.95%

1.25% 

0.50% 

0.50% 

0.20% 

Forging: 

Forging:
Heat slowly and uniformly to 1000°C. Forge within a range of 1000/800°C reheating if necessary. Cool slowly (preferably in a furnace) to avoid setting up stresses.

Annealing:
Heat uniformly to 770°C, equalise, then furnace cool. (Hardness about 229 Brinell). Fully machined tools should be packed during annealing.

Stress Relieving:
If machining operations have been heavy or if the tool has an unbalanced section, remove stresses before hardening by heating up to 650°C, equalise, then cool slowly.

Hardening:
Heat uniformly to 780/820°C until heated through. (If possible pre-heat at 300/500°C). Allow 30 minutes per 25 millimetre of ruling section and quench immediately in oil.

Martempering:
Martempering is an alternative hardening procedure which may be used when suitable salt bath equipment is available.


Tempering:
Heat uniformly and thoroughly at the selected tempering temperatures and hold for at least one hour per inch of total thickness.

 

Tempering °C

100

150

200

250

300

350

HRc

64/63

63/62

62/61

60/59

58/57

56/55

Hard Chromium Plating:
After hard chromium plating tempering of O1 steel/" target="_blank" class="keylink">tool steel is recommended at 180°C for 4 hours to avoid hydrogen embrittlement

Welding:
Due to the high risk of crack formation welding of O1 steel/" target="_blank" class="keylink">tool steel should be avoided, if possible. When, however welding is essential, the following serves as a guide:

A. Welding of soft annealed O1 steel/" target="_blank" class="keylink">tool steel.
· Preheat to 300 - 500°C 
· Weld at 300 - 500°C 
· Immediately stress relieve
Electrode: Cr-Mo alloy electrode for welding structural steel.

B. Welding in connection with hardening of soft annealed O1 steel/" target="_blank" class="keylink">tool steel. 
· Heat to hardening temperature.
· Cool to approx. 500°C 
· Weld at approx. 500°C
· Direct re-heating to hardening temperature whereafter hardening (quenching) is performed in the usual way.
Electrode: Hard facing electrode.

C. Repair welding of O1 steel/" target="_blank" class="keylink">tool steel in hardened and tempered condition.
· Preheat to the tempering temperature (min. 200°C) previously used.
· Weld at tempering temperature.
· Heat immediately to tempering temperature, but max. 300°C. Soaking time 2 hours.
Electrode: Hard facing electrode. 

Mechanical properties

O1 Tool Steel Mechanical properties,Our production completely according to the O1 Tool Steel standards to meet the O1 Tool Steel mechanical performance, can also according to the customer request, to meet the requirements of customers of O1 Tool Steel mechanical properties.

Heat treatment

O1 Tool Steel Heat treatment,Our production completely according to the O1 Tool Steel standards to meet the O1 Tool Steel Heat treatment, can also according to the customer request, to meet the requirements of customers of O1 Tool Steel Heat treatment.

Machining

O1 Tool Steel Machining,Our production completely according to the O1 Tool Steel standards to meet the O1 Tool Steel Machining, can also according to the customer request, to meet the requirements of customers of O1 Tool Steel Machining.

Welding performance

O1 Tool Steel Welding performance,Our production completely according to the O1 Tool Steel standards to meet the O1 Tool Steel Welding performance, can also according to the customer request, to meet the requirements of customers of O1 Tool Steel Welding performance.

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