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Compare ASTM A387 Grade 21 Steel to AA 4000 Series (Aluminum-Silicon Wrought Alloy)

4004 (BAlSi-7, AlSi10Mg1.5) Aluminum4006 (AlSi1Fe) Aluminum
4007 (AlSi1.5Mn) Aluminum4015 (AlSi2Mn) Aluminum
4032 (4032-T6, AlSi12.5MgCuNi) Aluminum4045 (BAlSi-5, AlSi10) Aluminum
4047 (BAlSi-4) Aluminum4104 (BAlSi-11, AlSi10MgBi) Aluminum
4115 (AlSi2MnMgCu) Aluminum4145 (BAlSi-3) Aluminum
4147 (BAlSi-9) Aluminum4343 (BAlSi-2, AlSi7.5) Aluminum