MIL-S-860 Steel Forgings For Steam Turbine Rotors S/S By Mil-F-24669/8This specification covers steel turbine rotor forgings for use in steam atmospheres which do not exceed the rated operating temperatures specified in 1.2.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15

MIL-M6o8(SHIPS)

), 5.1     9*!s  ••1Yfip   yariatiga.       -  Clleol     .          ftl'SaUoM  of  U.                          )

el-at.a       abtll    mt   be  over  the   "Upper  and  under  tile   1owr  Ualte    bJ'.,,..

than tbl percentar••  epecl!ied   in  table   II.

Table II   -  PendHible     checkanal7ai• Y81'iatio•    in  vdpt

percent.

11.eMDta              200 or  leH     ON!'  200  -  '°° 0..r    '°° - BOD    C)nrBlllJ

Pbo..,mna            .,..

...    ...

...  ...0.4

.c.u.t.l.o.n....

aalplmr

,0)           .04                       .05       .06

.04                       .05           .06              .07

•

IU1oon                   .02       !        .0)

.04

111.ckel

.07

\           .07                          .07                .07

Jl>l.Jb4ena           .04        l    ,04                       .05       .os

Chrolll:m                        .04           ,04                       .05

Yanadi•                     .01           .01           .01       .02

J.6     ll!shepisal   pmwrtiH,      -  The  .rorpnp     shall   meet thl   wbanical propert1'  requireMnt1   specified   in  table   III.

Table Ill    -  Mtchanical properties.

enaile   1tre~h,       p1i,min}:::                                                             120,000 115,

leld   1trencth,    p1i,   llln.

(0.02 percent   ot.r1et)      ¥   40,000                     95,000  85,

ercent   eloncation,    2 in.

Longit.udinal,    llin.                          22              22             20     18     18     17     18

Radial,   min.                       it       20     20              17     17     17     14     16

ercent   reduction   ot  area

Longi.tudinal, min.                         40           so        48           52     52     4l    45

Radial,   Iii n,                                      )0              50           45     56           50     .)8              50

Impact,  Chal'p7   V-notch, mi

(rt.-lba.      at   7rl'P.)                        10     28           25     45     40      6     15

Trana1tiog,, tmperature,

op,  -.z.                                 175    100    110     40     50    250    140

W    radial and longi.tudinal   tenaile    teata    llball Met   the1e  requi,_.\a,

Wben mre   than one teat   la  nquiNd,     u    in  toJ'linc•   weilid-lWmn   \llua -

'L   pounda,     all    teata   abalJ. Met   tbe•     nqui,._at.a,

,,  ,.,.,....    ot  the  teat•    requiNd.

b-au..t 011  50 percent   tibroua   fracture    appearance ot  ChU'J)I'  Y-notcb teau.

4

Source:  https://assist.dla.mil  --  Downloaded:  2014-09-29T13:15Z Check  the  source  to  verify  that  this  is  the  current  version  before  us

For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business