C37000 (Free-Cutting Muntz Metal) Last Update: Dec 31, 2003
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(%max., unless shown as range or min.)CuFePbZnMin./Max.59.0-62.0.15.8-1.5Rem.Nominal60.0-1.039.0Note: Cu + Sum of Named Elements, 99.6% min. # f) a r* `/ L
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6 _7 t1 J$ s$ [* G$ u2 `Applicable SpecificationsProductSpecificationTubeASTM B1351 D0 s# G" p! V- r3 e, N
MILITARY MIL-T-46072, [; N$ @1 V* y2 w% i" k) S( _! |
Common Fabrication ProcessesMachining 6 a5 W% }% ]! {* y: W) y
Fabrication PropertiesJoining TechniqueSuitabilitySolderingExcellentBrazingGoodOxyacetylene WeldingNot Recommended Gas Shielded Arc WeldingNot Recommended Coated Metal Arc WeldingNot Recommended Spot WeldNot Recommended Seam WeldNot Recommended Butt WeldFairCapacity for Being Cold WorkedFairCapacity for Being Hot FormedExcellentMachinability Rating70: i3 F- N+ q% l2 H
Mechanical Properties (measured at room temperature, 68 F (20 C)TemperSection; }, _ s& ~" S7 {5 C
SizeCold
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S+ _9 k4 Q: T8 yStrengthYield' b( I8 R/ x* H4 p4 G d3 d
Strength# D [1 p; k. F. O' r
(0.5% ext.
* Z" t! q- Z& {under load)Yield b/ C7 v" e1 m4 y: k$ _
Strength
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offset)Yield0 d, W0 x* E" Y! T" C+ |
Strength
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offset)ElRockwell" K% D$ Z6 o& Y. q2 c: M2 U
HardnessVickens
% o: z+ ^- r4 f: M+ W1 S1 J1 \Hard.Brinell
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! e ]3 o7 x5 IStrengthFatigue
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Impact
% Q6 r. ^: M! w4 [: n F8 mStrength
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Fksiksiksiksi%BCF30T5005003000ksiksift-lb
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* Y, \# P4 Z, W& B9 bCMPaMPaMPaMPa
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5 J9 }8 Z5 _, i# k' z- Y bMPaMPaJTubeH040.035TYP688060--685--74-----0.00 u3 z) H% g5 r- s! l: l
0.0. {' w: a( j; k' o4 j
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20552414--685--74-----0.0H800.025TYP687045--1075--67-----0.04 s6 E6 c- F$ S8 G
0.0
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20483310--1075--67-----0.0O500.00TYP685420--40--8043-----0.0
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1 j" U1 D( `: m/ b20372138--40--8043-----0.0*Fatigue Strength: 100 x 10 6cycles,
4 u! q) _8 E. Iunless indicated as [N]X 106.
& ]/ u. m) t3 \) N1 M. k, s1 yPhysical PropertiesUS CustomaryMetricMelting Point - Liquidus1650 F899 CMelting Point - Solidus1630 F888 CDensity0.304 lb/in3 at 68 F8.41 gm/cm3 @ 20 CSpecific Gravity8.418.41Electrical Resistivity38.4 ohms-cmil/ft @ 68 F6.38 microhm-cm @ 20 CElectrical Conductivity27 %IACS @ 68 F0.158 MegaSiemens/cm @ 20 CThermal Conductivity69.0 Btu · ft/(hr · ft2·oF)at 68F119.4 W/m · oK at 20 CCoefficient of Thermal Expansion11.6 ·10-6 per oF (68-572 F)20.9 ·10-6 per oC (20-300 C)Specific Heat Capacity0.09 Btu/lb/oF at 68 F377.1 J/kg · oK at 293 KModulas of Elasticity in Tension15000 ksi103400 MPaModulus of Rigidity5600 ksi38610 MPa | 
发表于 2007-5-15 21:22:49