Document 443ppoBdzyY1J6Nz1qqyw3znx

Manville < July 24, 1953 E.C. Lindstrom, DHP. Swindell-Dressier Blocks Order R-15951 U.S. Steel Corp. Morrisvllle, N.J. Yours of 6/10/53 This order has now been completed. As you requested, we show below the physical test data on this material. Prom the material manufactured for this order two sets of 5 blocks each were selected at random and submitted to the Control Laboratory for test. The te3t data shown below is contain ed in Control Laboratory Reports CC-5858 of 6/17/53 and CC-5953 of 7/6/53. DATA: Report CC-5858 of 6/17/53. Sample No. Finished Produc t MX-1915 I2 3 4 5 Moisture 1.2* 2.1* 1.5* 1.4* 2.2* Hardness (mm) .13 .14 .17 .14 .17 J-M Spec. 4* Max. (0.4 mm. Max. ( Av. of 5 0.5 mm. Max. Indiv Properties of ,Superex Stock Prior To Silleating Sample No. 12 3 4 J-M Spec. * Mag. 5.2* 5.5* 5.5* 5.5* Shrinkage: (*) Length Width Thickness Average Sy Si Ign. Loss 2.47 2.20 2.72 2.46 7.24 2.47 3.0 2.25 2.10 2.59 2.31 6.78 2.31 3.3 2.11 2.18 2.56 2.28 6.71 2.29 3.4 2.30 1.73 2.60 2.21 6.49 2.21 3.4 Original Hd. (mm) 0.44 0.51 0.51 0.56 5 - 7** 3.0* Max. 3.0* Max. 10.0* Max. 0.75 mm. Max. Fired Hd. (mm) 0.38 0.50 0.46 0.46 1.15 mm. Max. Note: On orders for Swindell-Dressler, Magnesia limits are 5 -- 75^- 0 J \ DATA? (Cont'd.) 2 Report CC-5953 of 7/6/53 Properties of Superex Stock Prior to Sillcating Sample No. 1234 * Nag. 4.8* 4.8* 5.0* 5.0* J-M Spec. 5-7* Shrinkage: Length Width Thickness Average Sv Si Ign. Loss Original Hd. (mm.) Fired Hd.(mm.) 1.07* 1.27 0.79 1.04 3.11 1.03 2.8 1.21* 1.23* 1.30* 1.42 1.47 1.45 1.09 1.14 1.00 1.24 1.2S 1.25 3.67 3.83 3.70 1.24 1.29 1.24 2.9 3.1 3.0 0.58 0.50 0.57 0.56 0.53 0.50 0.49 0.46 3.0* Max. 3.0* Max. 10.0* Max. 0.75 nun. Max. 1.15 mm. Max. Density (#/Cu.Ft.) 25.8# 26.0# 25.4# 26.1# 27#/Cu.Ft. Max Finished Product MX-1915 Sample No. 12345 Moisture 0.7* 0.7* 0.6* 0.6* 0.8* 4* Max. Hardness (mm.) 0.15 0.25 0.33 0.34 0.38 |JO.4 mm. Max. - k Avg. of 5 0.5 mm. Max. Indiv. Density (#/Cu.Ft.) 26.5# 26.0# 25.4# 25.5# 26.3# It will be noted that the material compiles with specification require ments. In addition to the above tests, we also selected samples at random after slllcatlng and drying for submission to the Control Labora tory. The Control Laboratory test results on this material are shovm in Control Laboratory Report CC-5953 of 7/6/53 and are aB follows: p % DATA; (Cont'd.) -3 Report CC-5953 of 7/5/53 Shrinkage On Samples Cut Prom Center of Blocks. Sample Length Width Thickness Average Sv Si Ignition Loss Original Hd. (mu.) Fired Hd. (mm.) Density (#/Cu.Ft.) 1 1.44# 1.54# 1.39# 1.46# 4.30# 1.45# 2.8# 23 1.41# 1.54# 1.39# 1.45# 4.28# 1.45# 2.9# 1.30# 1.56# 1.25# 1.37# 4.06# 1.37# 3.0# 0.62 0.40 0.50 0.38 0.63 0.45 25.3# 24.4# 24.8# 4 1.14# 1.45# 1.15# 1.25# 3.69# 1.25# 2.7# 0.51 0.43 25.3# J-M Spec. 3.0# Max. 3.0# Max. 10.0# Max. 0.75 mm. Max. 1.15 mm. Max. 27#/Cu .Ft. Max. The Production Department used #3 Loco to rough out the block and a cir cular saw to cut the blocks to the desired length. The band saw was then used to make the finished smooth surface. VJe first inspected the block from each setup individually 100# and in groups of 4 or 5 blocks 100# until we were assured the setup was correct and would remain correct. Then the 100# individual inspection was discontinued and the 100# inspec tion in group of 4 or 5 blocks was used for the remainder to Insure that dimensions and squareness were satisfactory. Our inspection throughout indicated that material complied with the provisions of the Finished Pro duct Specification and the requirements of Swindell-Dressier. J.R. Robson LH:MG cc H.J. O'Brieeni r 7H.E. Bird R. Jacobs4 E.C. Llndstrom , DHO. M.W. Burleson, DHQ.