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honed cylinder tube

Key:Aluminum

Category:Aluminum

Product Details


 1.Specifications

Material: 20# 45# 16Mn 27SiMn ST52

Standard: GB/T87138-88 GB/T3636-2000 DIN2391 EN10305

Straightness: 0.3--0.8mm/m

Roughness (Ra): 0.2 to 0.8 um 

Tolerance : ISO H7,H8,H9 
Conservation: Anti rust oiled both inside and outside surface, plastic caps in both ends

 

2.Chemical Composition(%)

Grade C(max) Si(max) Mn    P      S(max) 
ST35 0.17 0.35 >=0.40 0.025 0.025
ST42 0.21 0.35 >=0.40 0.025 0.025
ST52 0.22 0.55 <=1.60 0.025 0.025

 

3.Mechanical Properties

Steel Tensile strength  Yield     Elongation Hardness HB
20# 530 505 12 175
45# 660 630 9 190
16Mn 595 575 9 190
27SiMn 840 805 7.5 230

 

4.Product description 

Processing form I.D Length Straightness I.D Tolerance I.D Rounghness
Cold-rolled 20-100 <=10m 0.3-1.0 H7-H9 0.4-1.6
Cold-drawn 76-245 <=12m 0.3-1.0 H7-H9 0.8-1.6
Honed 40-180 <=7m 1000 H7-H9 0.4-0.8
SRB 63-180 <=7m 1000 H7-H8 0.1-0.4

 

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