ASTM B144-70

Specification for High-Leaded Tin-Bronze Sand Castings (Withdrawn 1972)

General Information

• Status: Withdrawn
• Technical Committee: B05 - Copper and Copper Alloys

Standards Content (Sample)

£ndo ~~f~ Designation, B 144 - 70
Amencan Foundrymen's Soc,e1v
Standard Specification for
1
HIGH-LEADED TIN BRONZE SAND CASTINGS
Thi~ Stan~a_rd •~ 1~~ued under lhe fi,ed designati?n B 144: the: number i~r_nedia1c:I~ fnflmqng 1h~ dcs1gna11on md1cutc, the
~car of ongrnal adopuon or. in the ca,;e or rev1s1011, 1hc year or last rev1s1on. A number ,n parenrheSl!s indicate, the: ,car
of la~I reapprov:il. ·
1. Scope 3.3 The castings shall be of uniform qualit) .
1.1 Th is specification! covers castings of
4. Chemical Composition
five allo)S having the ASTM cla ssifications.'
4. 1 The castings shall conform to the re­
alloy numbers' and commercial designations,
quirements as to chemical com position pre•
and nominal composi tions shown in Table I .
scribed in Table 2.
"Jon I- Thi, ~pecitica11on covers the technical
requiremenis fo r copper-base allo~ C-dstings and is
5. Chemic2l Analysh,
nOL intended for u,e for the com:~ponding allo) s in
ingot form which a rc: ~pccified in ASTM Spccifica•
5.1 An analysis of each melt ma) be re­
tion B 30. for ~oppcr- Ba.e A.Ila~, in Ingot t=orm for
quired at the option of the purchaser. If the
Sand Ca•aings.
castings are made from ingot metal in accord­
l .2 The casting are intended for use for
ance with Specification B 30 or returns (back­
conventional bearing~ and bushings in Lhe
stock) of known composition. and if the
cast state. Alloy 937 and 938 are frequently
foundry practice of the manuracturer is atis•
used also for castings which are called upon to
factory to the inspector. and if melting and
resist some of the mild acids such as are found
casting are witnessed by the inspector. he ma)
in mine "'aters.
waive further chemical anal) sis.
~on :! The value, ~lated 1n U.S. customarv
5.2 The sample for chemical anal)::.i,; shall
unib are to he rcgardcd a!'- the standard. Tht met•
be taken by drilling or cutting the test coupon
ric equivalents of U.S custumar) units ma} be ap­
proximate. or sprue in such a manner as to be repre!--cnta­
tivc of the entire cross section.
2. Ordering Information
6. Methods of Chemical Analysis
2.1 Orders for material under this spedfica­
tion shall include the followi ng information:
6. 1 Analyses, when made, shall be per­
2. 1.1 Allo) number (Section I).
formed in accordance with AST M Methods
2.1.2 Tests or certification required (Sec­ E 54, Chemical Anal~sis of Special Brasses
6
tion,; 5. 8. 10. 16). and and Bronzes.
2.1.3 Marking. if required (Section 14).
3. Manufacture
This specifica11on ,, under lh.: Jun-.diction of -\ST\1
3.1 The alloy ma~ be made by any approved
CommiLLec S.5 on Copper and Copper All,>~, .\ h,1 01
method. lf allo~ s in ingot form are used. the members ma> be found 1n the ASTM Yearboo~.
Current edition elfecti\e Feb. 17. 1970. Onem . lh h ·
alloy ingot selected shall have the same ASTM
sued 1941 . Replace:. B 144 5.?. -
" For ASME Boiler :ind Prc:.,urc: v~-.;;cl Code: apphc-a•
classification and allo) number as prescribed
11ons !>Ce related Spec1fic:11ion SB-144 in Sec1i,1n II oi that
in this specification and shall conform to the
Code:.
as prescribed in ASTM Classitica11on B 119. C:a,t Copper-Ba,c: .\ llu~,.
requirements for that alloy
which appears in the A1111110I Buu~ 11/ ASTJI Sra,,dard.1.
Specification B 30.
Part 5.
1
3.2 The castings shall be made in accord­The allO) number) .ire arb11rartl~ ,ho-.en .1nd ha, ~ n~1
olher ,ignificance.
ance with such practice as to obtain the physi­
Annual Boo~ ,,( ASTM SrandordJ. Pan 5.
cal properties prescribed in this specification. •· Annual Book 11( ASTM Srundard.~. Pan .t!
250

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B 144
ance with the specified limits for requirements
7. Tensile Properties
of the properties listed in the following table,
7. I The material shall conform to the re­
an observed value or a calculated value, shall
qui remcn ts as to tensi le properties prescribed
be rounded off as indicated in accordance with
in Table 3.
the rounding-off method of ASTM Recom­
mended Practice E 29. for Indicating Which
8. Pressure and fracture Tests
Places of Figures Arc to Be Consider_ed Sig­
8. 1 The castings made from these alloys
nificant in Specified Limiting Values.'
shall conform to such requirements as to pres­
Rounded-Off Unn for
Proper!~
sure and fracture tests as may be agreed upon Observed or
Culculated Value
by the manufacturer and the purchaser and as
neare,t unit In the la~t
Chemical cornp,hition
specified in the order.
right-hand place of
figure,
nearest 1000 psi (nc:are~t
Tcn,ile strenith
9. Test Specimens
0.1 kgf /mm )
Yield strength
neare~I multiple of0.5 per­9.1 It is recommended that the lest coupons
F.longation: Below 5
cent
percent
and specimens for tension le ts be prepared
nearc~t I percent
<, percent and o,cr
in accordance with ASTM Recommended
Practice B 208. for Tension Test Specimens
13. Workmanship and Finish
for Copp
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