- Name: Honed Tube
- No.: 005
PRODUCTS
Standard:DIN2391,EN10305,JISG3445,ASTMA519,GB3639,16Mn,27SiMn,25Mn,SAE1026
Material:ST45，ST52，20 #，45#，CK45，16Mn,27SiMn,25Mn,SAE1026
Delivery condition:BKS
Outer diameter:50-300mm
Inner diameter:40-250mm
I.D. Tolerance:H8~H9
Length:3-9m
Straightness:1/1000
I.D. roughness:RA 0.4micron(max)
Technology:Honed & SRB(SKIVED AND ROLLER BURNISHED )
Chemical Component:
|
Steel Grade |
Chemical Composition (%) |
||||||
|
C |
Si |
Mn |
P |
S |
Cr |
||
|
≤ |
|||||||
|
St45 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.250 |
|
|
ST52(E355) |
≤0.22 |
≤0.55 |
≤1.6 |
0.025 |
0.025 |
0.25 |
|
|
SAE1026 |
0.22-0.28 |
0.15-0.35 |
0.60-0.90 |
0.040 |
0.050 |
/ |
|
|
27SiMn |
0.24-0.32 |
1.10-1.40 |
1.10-1.40 |
0.035 |
0.035 |
0.300 |
|
|
20# |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
0.250 |
|
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P(≦) | S(≦) | Cr(≦) |
| ST45 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
| ST52(E355) | ≦0.22 | ≦0.55 | ≦1.6 | 0.025 | 0.025 | 0.250 |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.050 | / |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | 0.300 |
| 20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
Mechanical Properties
|
Delivery condition |
BKS Cold Drawn & Stress-Relieved |
||
|
Steel Grade |
Rm MPa |
ReH MPa |
Elongation A5(%) |
|
ST45 |
≥520 |
≥375 |
≥15 |
|
ST52(E355) |
≥600 |
≥520 |
≥14 |
|
SAE1026 |
≥600 |
≥510 |
≥15 |
|
16Mn |
≥600 |
≥520 |
≥14 |
|
20# |
≥520 |
≥375 |
≥15 |
Delivery condition:BKS Cold Drawn&Stress-Relieved
| Steel Grade | Rm MPa(≥) | ReH MPa(≥) | Elongation A5(%)(≥) |
| ST45 | 520 | 375 | 15 |
| ST52(E355) | 600 | 520 | 14 |
| SAE1026 | 600 | 510 | 15 |
| 16Mn | 600 | 520 | 14 |
| 20# | 520 | 375 | 15 |
Quality measurement system
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