Specification
1.High carton high chromium tool steel.
2.High wear resistance and toughness.
3.Offers a measure of corrosion resistar when polished.
4.Alternative to oil hardening tool steel.
Chemical composition
NAME C Si Mn P S Cr V
1.2842/O2 0.85~0.95 ,0.40 1.70~2.00 ,0.030 ,0.030 ---- 0.10~0.25
Similar grade
GB AISI/ASTM DIN JIS
9Mn2V O2 1.2842 SKS31
PropertiesConditions
T (°C)Treatment
Density7.66 x 1000 kg/m325-
Mechanical Properties
The mechanical properties of O2 steels are tabulated below.
Physical Properties
Properties T (°C)Treatment
Density 7.66 x 1000 kg/m3 25
Mechanical Properties
Properties T (°C)Treatment
Poisson's ratio 0.27-0.30 25-
Elastic modulus 27557-30458 ksi 25
Thermal Properties
Properties T (°C) Treatment
Thermal expansion 11.2 x 10-6/ºC 20-100
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Product Name Precision Steel Pipe Standard DIN2391 EN10305-1 ASTMA179 ASTM A192 ASTM A519 Material SAE1010,SAE1020,#10,#20,#45,304,316 Outer diameter 8MM-50MM Wall thickness 0.5-50.0MM Length fixed(3-12m) or customized Technology High precision Cold drawn/ Cold rolled Heat treatment BK/BKS/NBK Advantages Short delivery time Quality assurance Competitive price
Product Name Precision Steel Pipe Standard DIN2391 EN10305-1 ASTMA179 ASTM A192 ASTM A519 Material SAE1010,SAE1020,#10,#20,#45,304,316 Outer diameter 8MM-50MM Wall thickness 0.5-50.0MM Length fixed(3-12m) or customized Technology High precision Cold drawn/ Cold rolled Heat treatment BK/BKS/NBK Advantages Short delivery time Quality assurance Competitive price
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
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