is the power mac g5 case actually aluminum

The Power Macintosh G5/1.6 features a 1.6 GHz PowerPC 970 (G5) processor with an optimized AltiVec 'Velocity Engine' vector processing unit, and 512k level 2 on-chip cache, and shipped configured with 256 MB of 333 MHz PC2700 DDR SDRAM, an 80.0 GB (7200 RPM) Serial ATA hard drive, a 4X DVD-R/CD-RW 'SuperDrive', and a NVIDIA GeForce FX 5200 Ultra (AGP 8X Pro) video card with 64 MB of DDR SDRAM. Together this combination results in major speed gains compared to earlier Apple systems. In addition to higher clock speeds, the PowerPC 970 (G5) has a 'new execution core that features massively parallel computation for an unprecedented 215 in-flight instructions', and the Power Macintosh G5 uses a new system architecture as well. The Apple Power Macintosh G5/1.6, along with the Power Macintosh G5/1.8 and Power Macintosh G5/2.0 DP, is a member of the first Mac series to use the 64-bit PowerPC 970 (G5) processor, and consequently are arguably the first 'desktop' computers to use 64-bit chips. 1.4.3 Power Macintosh G5 'Quad Core' (2.5).1.4.2 Power Macintosh G5 Dual Core (2.3).1.4.1 Power Macintosh G5 Dual Core (2.0).1.4 Apple Power Macintosh G5 (Late 2005).1.3 Apple Power Macintosh G5 (Early 2005).1.2 Apple Power Macintosh G5 (Mid 2004).1.1 Apple Power Macintosh G5 (Mid 2003).

Is the power mac g5 case actually aluminum