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carbon steel pipe / carbon steel honed tubes, Seamless Steel Equipment Tube 1
Specifications
Material: 20# 45# 16 Mn 27SiMn 25Mn
Standard: GB/T8713-88 GB/T3639-2000 DIN 2391 EN10305
Straightness:0.3~0.8mm/m
1. MATERIAL SPECIFICATION
ST52,BK+S,DIN2391,ASTM A 106
2. CHEMICAL COMPOSITION (%)
|
Grade Elements |
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 of ST52 hydraulic cylinder tube
Elongation(Min) Y.S (Min.) UTS (Min.)
≥15 470 N/MM2 580 N/MM2
4. SUPPLY CONDITION
Cold drawn seamless steel tube, honed tubes,Skived and rolling tubes.
5.Dimension tolerance:
|
Size of I.D |
I.D Tolerance |
Tolerance of wall thickness |
||
|
H8 |
H9 |
H10 |
±5% |
|
|
30 |
+0.033 |
+0.052 |
+0.084 |
|
|
>30-50 |
+0.039 |
+0.062 |
+0.100 |
|
|
>50-80 |
+0.046 |
+0.074 |
+0.120 |
|
|
>80-120 |
+0.054 |
+0.087 |
+0.140 |
|
|
>120-180 |
+0.063 |
+0.100 |
+0.160 |
|
|
>180-250 |
+0.072 |
+0.115 |
+0.185 |
|
|
>250-315 |
+0.081 |
+0.130 |
+0.210 |
|
|
>315-400 |
+0.089 |
+0.140 |
+0.230 |
|
6.Product description
|
Processing form |
I.D |
length |
straightness |
I.D tolerance |
I.D Rounghness |
|
Cold-rolled |
30-100 |
≤12M |
0.3-1.0 |
H8-H10 |
0.4-1.6 |
|
Cold-drawn |
30-250 |
≤12M |
0.3-1.0 |
H8-H10 |
0.8-1.6 |
|
Hone |
40-500 |
≤12M |
1000 |
H8-H10 |
0.4-0.8 |
|
SRB |
40-400 |
≤7M |
1000 |
H8 |
0.1-0.4 |
