Document o211qJ3zgYqd4Ky3wvy3VdGw

return to J-M RESEARCH FILE POOM form Mttf 'IMTU IM U4.A. FINISHED PRODUCT SPECIFICATION SPECIAL TOLERANCE BLOCKS SUPERS BLOCKS OR MX-1915 SILICATED SUPERS BLOCKS V. QUALITY REQUIREMENTS: A. Penalty (lbs/cu. ft.) Desired Maximum - 2ii# Maximum - 27# B. Modulus of Rupture (pal) 60 minimum C. Abrasion Loss (percent) 1. 10 nln. 2. 20 aln. - UO maximum - 70 maximum D. Hardness (m.m. by Plastometer) As Receired O.lt max. (avg. 5 samples) 0.5.max. (individual) B. Change after Soaking Heat 1. Hardness (6 hrs. at 1500F) - 0.9 m.m. mmHmnin 2. Loss in Seight (b hrs. at 1500F) - 10$ maximum F. Linear Shrinkage (percent) (Tested on Unsilicated block) 1. After 2U hrs. at 1900 F - 3$ maximum 71. MARKING, PACKAGING AND LABELLING: 1 "1 ^ A. Marking Because of the small amount of taper on some blocks it is difficult to determine visually which is the wide face. To facilitate installation this face shall be marked by an *X*. B. Packaging Cases or Cartons. Cases when Bawdust is used. C. Labelling - Stencil on Case or Carton the followings Order No. Number of pieces Size or customer's item No. Print or drawing No. Customer's name and destination INDICATES CMANai - RtASONi Change in Title _ Regular Approvals - E. C. Lindstrom's letter of 2-9-53 C. A. deVyver ' Part of page 2 issued 3-12-51 and page 3 issued 12-5-50 of spec, entitled "MX-1915 Silicated Superex Blocks". OATS IHUn 2-13-53