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AS1074 Standard Specification for Steel tubes for mechanical purposes. This Standard specifies requirements for the production and supply of carbon and carbon-manganese steel tubes of round, square, rectangular or other non-circular cross-section produced by either cold-forming or hot-forming, and intended for use in mechanical applications.
Chemical Composition
Grade |
Type of analisis |
C |
Si |
Mn |
P |
S |
Carbon |
C200 abd H200 |
cast |
0.15 |
|
|
0.05 |
0.05 |
0.29 |
product |
0.19 |
|
|
0.06 |
0.06 |
|
|
C250 and H250 |
cast |
0.25 |
0.40 |
|
0.04 |
0.04 |
0.44 |
product |
0.29 |
0.45 |
|
0.05 |
0.05 |
|
|
C350 and H350 |
cast |
0.22 |
0.50 |
1.60 |
0.04 |
0.04 |
0.49 |
product |
0.26 |
0.55 |
1.70 |
0.05 |
0.05 |
|
|
C450 |
cast |
0.25 |
0.40 |
|
0.04 |
0.04 |
0.44 |
product |
0.29 |
0.45 |
|
0.05 |
0.05 |
|
Mechanical Properties
Grade |
Minimum
yield |
Minimum
tensile |
Minimum
elongation as a proportion of |
|
Circular tube |
Non-circular tube |
|||
C200 abd H200 |
200 |
320 |
24 |
20 |
C250 and H250 |
250 |
350 |
22 |
18 |
C350 and H350 |
350 |
450 |
20 |
16 |
C450 |
450 |
500 |
|
|