SSAB Form Tube 420
Download data sheet
Download data sheet
Form Tube 420 is high-strength formable precision tube. It has 15% higher elongation values and very narrow tolerances compared with competing products. Available in circular, rectangular, square and special shapes, it comes with different coating and surface options including cold rolled, galvanized, galvannealed and galfan. Customized shapes and other tailoring options are available upon request. Typically uses include light engineering, where formability, uniform quality, different surface options and usability are important.
SSAB Form Tube 420 is available in circular, square and rectangular shapes.
| Shapes | Dimensions |
|---|---|
| Circular (mmin) | 16 - 88.90.63 - 3.50 |
| Square (mmin) | 19x19 - 70x70 |
| Rectangular (mmin) | 25x15 - 100x40 |
| Wall thickness (mmin) | 0.9 - 3.00.04 - 0.12 |
| Mill length (mm) | 6000 |
Other shapes, sizes and lengths are available upon request.
| Outer diameter (mmin) | 0.9 mm (kg/m) | 1.0 mm (kg/m) | 1.25 mm (kg/m) | 1.5 mm (kg/m) | 2.0 mm (kg/m) | 2.5 mm (kg/m) | 3.0 mm (kg/m) |
|---|---|---|---|---|---|---|---|
| 160.63 | 0.335 | 0.370 | 0.455 | 0.536 | 0.691 1) | — | — |
| 180.71 | 0.380 | 0.419 | 0.516 | 0.610 | 0.789 | — | — |
| 190.75 | 0.402 | 0.444 | 0.547 | 0.647 | 0.838 | — | — |
| 200.79 | 0.424 | 0.469 | 0.578 | 0.684 | 0.888 | — | — |
| 220.87 | 0.468 | 0.518 | 0.640 | 0.758 | 0.986 | 1.20 1) | — |
| 250.98 | 0.535 | 0.592 | 0.732 | 0.869 | 1.13 | 1.39 1) | 1.63 1) |
| 281.1 | 0.601 | 0.666 | 0.825 | 0.980 | 1.28 | 1.57 | 1.85 |
| 301.2 | 0.646 | 0.715 | 0.886 | 1.05 | 1.38 | 1.70 | 2.00 |
| 321.3 | — | 0.765 | 0.948 | 1.13 | 1.48 | 1.82 | 2.15 |
| 351.4 | — | 0.838 | 1.04 | 1.24 | 1.63 | 2.00 | 2.37 |
| 381.5 | — | 0.912 | 1.13 | 1.35 | 1.78 | 2.19 | 2.59 |
| 401.6 | — | 0.962 | 1.20 | 1.42 | 1.87 | 2.31 | 2.74 |
| 411.6 | — | 0.990 | 1.22 | 1.46 | 1.92 | 2.37 | 2.81 |
| 44.51.75 | — | 1.07 | 1.33 | 1.59 | 2.10 | 2.59 | 3.07 |
| 481.9 | — | — | 1.44 | 1.72 | 2.27 | 2.81 | 3.33 |
| 502.0 | — | — | 1.50 | 1.79 | 2.37 | 2.93 | 3.48 |
| 552.2 | — | — | 1.66 | 1.98 | 2.61 | 3.24 | 3.85 |
| 572.2 | — | — | 1.72 | 2.05 | 2.71 | 3.36 | 4.00 |
| 602.4 | — | — | 1.81 | 2.16 | 2.86 | 3.55 | 4.22 |
| 76.13.00 | — | — | — | 2.76 | 3.65 | 4.54 | 5.41 |
| 88.93.50 | — | — | — | — | 4.29 | 5.33 | 6.36 |
1) Elongation A-value according to +CR2, 12%.
| Height x Width (mm) | 1.0 mm (kg/m) | 1.25 mm (kg/m) | 1.5 mm (kg/m) | 2.0 mm (kg/m) | 2.5 mm (kg/m) | 3.0 mm (kg/m) |
|---|---|---|---|---|---|---|
| 19 x 19 | 0.564 | 0.694 | 0.820 | 1.06 1) | — | — |
| 20 x 20 | 0.595 | 0.733 | 0.868 | 1.12 1) | — | — |
| 25 x 25 | 0.752 | 0.930 | 1.10 | 1.44 | — | — |
| 30 x 30 | 0.909 | 1.13 | 1.34 | 1.75 | 2.15 | 2.39 |
| 32 x 32 | 0.972 | 1.20 | 1.43 | 1.88 | 2.31 | 2.58 |
| 35 x 35 | 1.07 | 1.32 | 1.57 | 2.07 | 2.54 | 2.86 |
| 40 x 40 | — | 1.52 | 1.81 | 2.38 | 2.93 | 3.33 |
| 50 x 50 | — | 1.91 | 2.28 | 3.01 | 3.72 | 4.28 |
| 60 x 60 | — | — | 2.75 | 3.64 | 4.50 | 5.22 |
| 70 x 70 | — | — | — | 4.26 | 5.29 | 6.16 |
1) Elongation A-value according to +CR2, 12%.
| Height x Width (mm) | 1.0 mm (kg/m) | 1.25 mm (kg/m) | 1.5 mm (kg/m) | 2.0 mm (kg/m) | 2.5 mm (kg/m) | 3.0 mm (kg/m) |
|---|---|---|---|---|---|---|
| 25 x 15 | 0.595 | 0.733 | 0.868 | 1.12 1) | — | — |
| 30 x 10 | 0.595 | 0.733 | 0.868 | 1.12 | — | — |
| 30 x 15 | 0.673 | 0.831 | 0.985 | 1.28 | — | — |
| 30 x 20 | 0.752 | 0.930 | 1.10 | 1.44 | — | — |
| 30 x 25 | 0.830 | 1.03 | 1.22 | 1.59 | 1.95 | — |
| 35 x 15 | 0.752 | 0.930 | 1.10 | 1.44 | — | — |
| 35 x 20 | 0.830 | 1.03 | 1.22 | 1.59 | 1.95 | — |
| 40 x 20 | 0.909 | 1.13 | 1.34 | 1.75 | 2.15 | — |
| 40 x 25 | 0.987 | 1.22 | 1.46 | 1.91 | 2.34 | — |
| 40 x 30 | 1.07 | 1.32 | 1.57 | 2.07 | 2.54 | 2.86 |
| 50 x 20 | 1.07 | 1.32 | 1.57 | 2.07 | 2.54 | 2.86 |
| 50 x 25 | — | 1.42 | 1.69 | 2.22 | 2.74 | 3.10 |
| 50 x 30 | — | 1.52 | 1.81 | 2.38 | 2.93 | 3.33 |
| 50 x 40 | — | 1.71 | 2.05 | 2.69 | 3.33 | 3.80 |
| 60 x 20 | — | 1.52 | 1.81 | 2.38 | 2.93 | 3.33 |
| 60 x 30 | — | 1.71 | 2.05 | 2.69 | 3.33 | 3.80 |
| 60 x 40 | — | 1.91 | 2.28 | 3.01 | 3.72 | 4.28 |
| 70 x 25 | — | — | 2.16 | 2.85 | 3.52 | 4.04 |
| 70 x 30 | — | — | 2.28 | 3.01 | 3.72 | 4.28 |
| 70 x 50 | — | — | 2.75 | 3.64 | 4.50 | 5.22 |
| 80 x 20 | — | — | 2.28 | 3.01 | 3.72 | 4.28 |
| 80 x 30 | — | — | 2.52 | 3.32 | 4.11 | 4.74 |
| 80 x 40 | — | — | 2.75 | 3.64 | 4.50 | 5.22 |
| 80 x 60 | — | — | — | 4.26 | 5.29 | 6.16 |
| 100 x 40 | — | — | — | 4.26 | 5.29 | 6.16 |
1) Elongation A-value according to +CR2, 12%.
| Yield strength Rp0.2 (min MPa) |
Tensile strength Rm (min MPa) |
Elongation A (min %) |
|---|---|---|
| 420 | 490 | 14 |
Mechanical properties meet or exceed the requirements of EN 10305 (+CR2).
| C (max %) |
Si 1) (max %) |
Mn (max %) |
P 1) (max %) |
S 2) (max %) |
Altot 3) (min %) |
|---|---|---|---|---|---|
| 0.12 | 0.50 | 1.70 | 0.020 2) | 0.020 | 0.020 |
Chemical composition meets or exceeds the requirements of EN 10305.
If other chemical elements such as Ti, Nb or V are used, the content of these elements are reported in the inspection document.
1) SSAB Form Tube H grade is suitable for high quality hot-dip galvanizing (Si < 0.03%, Si +2.5P < 0.06%)
2) Low level of impurities ensure excellent formability and weldability
3) This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V.
| Characteristic | Circular precision tubes Tolerances meet or exceed the requirements of EN 10305-3 |
|---|---|
| Outside diameter (D) (1D < 20 mm20 ≤ D < 32 mm32 ≤ D < 44 mm44 ≤ D < 55 mm55 ≤ D < 70 mm70 ≤ D < 80 mm80 ≤ D < 100 mm |
±0.12 mm±0.15 mm ±0.20 mm±0.25 mm ±0.30 mm±0.35 mm ±0.40 mm |
| Out-of-roundness | The diameter tolerances include the out-of-roundness |
| Thickness (T) |
T ≤ 1.5 mm: ±0.15 mm T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller |
| Straightness | Maximum 0.15% of measured length |
| Height of internal weld bead, g;Bead removedBead not removed |
g ≤ 0.3 mm g < 0.6 mm, when T ≤ 1.5 mmg < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm |
| Mill length | 0/+50 mm, standard length 6000 mm |
| Exact length, single cutting | Agreed at the time of enquiry and order |
| Exact length, bundle cutting | Agreed at the time of enquiry and order |
1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.
| Characteristic | Square precision tubes Tolerances meet or exceed the requirements of EN 10305-5 |
|---|---|
| Outside dimensions (H) and (B), longer side1)H < 25 mm25 ≤ H < 40 mm40 ≤ H < 60 mm60≤ H < 70 mm70 ≤ H < 80 mm |
±0.20 mm±0.25 mm ±0.30 mm±0.35 mm ±0.40 mm |
| Side concavity and convexity | Included in outside dimension tolerance |
| Thickness (T) |
T≤ 1.5 mm: ±0.15 mm T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller |
| Straightness |
Maximum 0.15% of measured tube length when shorter side length > 30 mm Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm |
| Location of weld seam from the centre line | On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater. |
| Height of internal weld bead, g;Bead removedBead not removed |
g ≤ 0.3 mm g < 0.6 mm, when T ≤ 1.5 mmg < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm |
| Squareness of side | 90° ±1° |
| Corner profile |
R < 1.5 x T, when T ≤ 2.5 mm R < 2.2 x T, when T > 2.5 mm |
| Twist (V) |
V ≤ 3 mm for B and H ≤ 30 mm V ≤ B/10 or ≤ H/10 for B or H > 30 mm |
| Mill length | 0/+50 mm, standard length 6000 mm |
| Exact length, single cutting | Agreed at the time of enquiry and order |
| Exact length, bundle cutting | Agreed at the time of enquiry and order |