OD:30mm~250mm
WT:2mm~30mm
Relevant Material Grade:
10#, 16Mn, Q195-Q345, ST35-ST52, STB35-STB42, 20#, 45#, 16Mn, Q345, ST35, St45, St52, St52.4, STB42, 16Mn, St52,10#-45#, ST35-ST52
Standard: ASTM, DIN, ASTM A1020-2002, DIN 2391
Application: Hydraulic Pipe, Hydraulic cylinder, automobile, oil drilling, textile machinery
Surface Finish: Annealed, Pickled
Chemical Analysis:
|
Steel Grade |
Type of deoxidation (RR fully killed) |
Chemical composition % by mas |
Addition of nitrogen fixing elements (e.g. bot less than 0.020% AI total) |
|||||
|
Symbol |
Material number |
C max |
Si max |
Mn |
P Max |
S Max |
||
|
ST 37.4 |
1.0255 |
RR |
0.17 |
0.35 |
≥0.35 |
0.040 |
0.040 |
Yes |
|
ST 44.4 |
1.0257 |
RR |
0.20 |
0.35 |
≥0.40 |
0.040 |
0.040 |
Yes |
|
ST 52.4 |
1.0581 |
RR |
0.22 |
0.55 |
≥1.60 |
0.040 |
0.035 |
Yes |
1)Average value from three tests; only one individual value may fall short of the specified minimum value by not more than 30%
2)For cold finished tubes in the NBK condition(annealed above the upper transformation point under shielding gas or in a vacuum), minimum values of yield stress lower than these values by 20N/mm2 are permitted.
3)For cold finished tubes in the NBK condition, minimum values of tensile strength lower than these values by 10n/mm2 are permitted.
