Material Group 21 ISO/TR 15608:
Pure aluminium ≤ 1% impurities or alloy content
Pure Al materials
Pure aluminium is quite soft and lacking in strength. In most applications various aluminium alloys are used instead because of their higher strength and hardness. The yield strength of pure aluminium is 7–11 MPa, while aluminium alloys have yield strengths ranging from 200 MPa to 600 MPa. Pure Al is a ductile material, with a percent elongation of 50-70%, and malleable allowing it to be easily drawn and extruded. It is also easily machined and cast.
Applications of Pure Al materials:
Pur al materials are suitable for the manufacture of pressure vessels and piping in accordance with EN 1392 “Aluminum and aluminum alloys – Wrought and cast products – Particular requirements for products for the fabrication of pressure equipment” see list below.
Table: Weldability and pressurised applications for pure aluminium materials in acc. to EN 1392:
| Material | Condition | Weldability | Application | min./max. Working Temp. |
|---|---|---|---|---|
| EN AW-1050A | O/H111 H112 H12 H14 | yes | Pressure Vessel, Piping Pressure Vessel, Piping Piping Piping | -273/200 °C |
| EN AW-1070A | O/H111 H112 | yes | Pressure Vessel, Piping Pressure Vessel, Piping | -273/200 °C |
| EN AW-1080A | O/H111 H112 | yes | Pressure Vessel, Piping Pressure Vessel, Piping | -273/200 °C |
Typical materials in group 21
| Name/Grade | Number | Standards | Products | Remarks |
|---|---|---|---|---|
| EN AW-Al 99,5 | EN AW-1050A EN AW-1050A | EN 485-2 EN 755-2 | Bleche Extruded rod/bar, tube | EN 13445-8 & EN 13480-8 EN 13445-8 & EN 13480-8 |
| EN AW-Al 99,7 | EN AW-1070A | EN 485-2 EN 755-2 | Bleche Extruded rod/bar, tube | EN 13445-8 & EN 13480-8 EN 13445-8 & EN 13480-8 |
| EN AW-Al 99,8 | EN AW-1080A | EN 485-2 | Bleche | EN 13445-8 & EN 13480-8 |
| 1060 1060 1060 1060 1060 1060 | A91060 A91060 A91060 A91060 A91060 A91060 | ASTM B-209 ASTM B-210 ASTM B-221 ASTM B-234 ASTM B-241 ASTM B-345 | Plate & Sheet Smls. tube Bar, Rod & Shape Smls. tube Smls. pipe & tube Smls. pipe & tube | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| 1100 1100 1100 | A91100 A91100 A91100 | ASTM B-209 ASTM B-221 ASTM B-241 | Plate & Sheet Bar, Rod & Shape Smls. pipe & tube | ASME BPVC ASME BPVC ASME BPVC |