C37000 (Free-Cutting Muntz Metal) Last Update: Dec 31, 2003, z; `7 l; g: Z, n3 Z3 }
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Chemical Composition
2 E0 m8 h8 z- l" f( h" A(%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. # a& J( i1 o" f: [/ l( W$ g
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Applicable SpecificationsProductSpecificationTubeASTM B135 c) s/ ~5 Z. B
MILITARY MIL-T-46072' }6 y1 B* [% t' n
Common Fabrication ProcessesMachining
3 }% n. `+ @6 A* oFabrication 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 k" R1 |& g- L4 o# s& `7 E
Mechanical Properties (measured at room temperature, 68 F (20 C)TemperSection; V$ O. z, j% U% w- s
SizeCold- k2 a# ?" L3 H6 l
WorkTyp/
, ^( ^5 h k5 M" R/ [MinTempTensile) p1 u* r# c+ ]3 C. G, u8 v
StrengthYield' F8 L9 t/ L" ~6 ~2 i
Strength" I1 N3 a. |) `4 ^7 H# U+ \6 C
(0.5% ext.
) ~# W9 H0 P- `under load)Yield8 l% W- O* I6 t( X2 C
Strength9 K- V( `. W z
(0.2%
* } @! @" H4 _% f7 @0 ^offset)Yield4 L2 g6 D6 X3 H2 z9 ?4 n
Strength% e) y$ Z3 y8 u% t; |- J0 x
(0.05%6 D: m D, t- R, _. T
offset)ElRockwell
) B6 _# _5 P/ B9 NHardnessVickens: ?" T% _/ t- k% Z- @
Hard.Brinell$ g7 K( r7 L( @* u' |" F
Hard.Shear' G% ^& L7 o3 v+ q3 o4 F& O9 s
StrengthFatigue
: }3 ?$ |4 ^, k% p$ E! GStrength*Izod! v7 P! i: e; M: |8 Z% ~
Impact+ G2 b" `. G) }% a0 d. A$ F
Strength2 J) M# D3 [7 A! P! K
in.%4 @! C8 B* M: {( K! u2 D
Fksiksiksiksi%BCF30T5005003000ksiksift-lb
$ K7 k1 p; S! i! C$ D9 U" s" K5 wmm.2 c$ \9 Y8 X% W/ X; b% S
3 t( `$ z8 ~( _CMPaMPaMPaMPa4 [. H( b: G) L5 M) T* s
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, ^5 H1 e( W0 P& M* G) `, RMPaMPaJTubeH040.035TYP688060--685--74-----0.01 \; N2 J6 { k( j4 C. o
0.09 F) N& V& u) z
" f6 m4 W+ C9 T; G& t
20552414--685--74-----0.0H800.025TYP687045--1075--67-----0.0: }' Y/ ~! ^+ d0 U. E& z/ l1 Q
0.07 f. t8 b. A# \( W
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20483310--1075--67-----0.0O500.00TYP685420--40--8043-----0.0: w" E) X- W9 h2 m" t* m3 }
0.0
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" c# V& E9 i7 Z6 T; J20372138--40--8043-----0.0*Fatigue Strength: 100 x 10 6cycles,
% S' u6 H; Z: @ }& }6 Eunless indicated as [N]X 106.
# o p4 E+ I H! }/ w$ j& PPhysical 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