C37000 (Free-Cutting Muntz Metal) Last Update: Dec 31, 2003& o" u# |3 ]5 c ]; b
. t6 b) D! M+ \9 \1 }
Chemical Composition8 ]# W) [ R9 c. j. ]) G# B
(%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.
9 F7 N, B; l' x* g' }! M' E$ _# M- d7 @0 A
; z+ U' T2 ?, m
Applicable SpecificationsProductSpecificationTubeASTM B135
* d% w# a6 a8 \2 KMILITARY MIL-T-460728 m4 ?5 `. E$ y% {$ b+ Q& n
Common Fabrication ProcessesMachining
! q9 P8 f* J/ pFabrication 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
8 p+ z0 t U3 T8 s5 z) z k, T3 vMechanical Properties (measured at room temperature, 68 F (20 C)TemperSection
0 x4 y" u7 M5 V0 p& Q5 NSizeCold
& U% K3 r! {; z3 uWorkTyp/
1 z; O) N% x2 L; Z# j: _' IMinTempTensile
5 p8 A2 w$ }) t Q' kStrengthYield8 S: T$ w6 C) e0 e& \% ?8 E1 p7 w0 d
Strength
3 x6 w: Y1 h9 ~(0.5% ext.: F+ g! c8 q: f/ n0 n# ]" P
under load)Yield/ j ~9 ~" i% }+ b8 X% B: J
Strength" |& P' Y5 `& P8 W* ^
(0.2%
% w& K8 [; x9 `offset)Yield: B6 T. o+ l4 ]/ o9 g1 A
Strength( R) A" d' C% J
(0.05%
# l- D% J6 G( N/ poffset)ElRockwell$ A$ e; q r) r7 q( j% Z
HardnessVickens2 @+ h5 {3 H3 ?
Hard.Brinell7 Q3 [& N8 {6 Q. Y
Hard.Shear |" {9 {2 B- [( n" U
StrengthFatigue
{2 H, \( P: `Strength*Izod$ n4 G+ m+ ?& S+ k% {* q
Impact
S% N, y# Y: f1 f' A, ZStrength
% ]$ l# N+ N D' D J& P. u) |5 Zin.%; W" d: |5 ~0 A! H
Fksiksiksiksi%BCF30T5005003000ksiksift-lb) n, ]- V1 R; J2 g0 o( E p) r
mm.
! f7 X; A) p0 l9 m- L0 n2 |) T3 @. R- M5 y
CMPaMPaMPaMPa C2 c6 y: a% w! G; A
& [$ o* D5 o3 e' l
/ k, L9 b# D+ f6 ]- H+ L2 N+ `# D/ ~9 \! R8 w% |
1 h' N5 ~9 c# k8 ~( K6 K
/ c& S6 j5 O8 x9 [ ~7 B
* a. ]$ G9 E3 d/ k5 a
) a+ M0 x7 |! f# y. @. T1 eMPaMPaJTubeH040.035TYP688060--685--74-----0.0
" u0 t/ Z$ n7 T6 A# \4 \' c0.0
7 |& w# M# y! A: N. o
7 l3 H0 |8 d- O7 B j- Y20552414--685--74-----0.0H800.025TYP687045--1075--67-----0.05 u# K9 v+ A/ X8 @; e$ a
0.0
% w6 J" c/ [: d2 p; Z" S' d2 D6 n9 ?* H' i7 w& b6 U/ `7 s- ^1 e
20483310--1075--67-----0.0O500.00TYP685420--40--8043-----0.0
- O) U$ g) ~- `8 O- M/ _0.0
# g# O1 [( g5 b6 [- O0 u/ r* e+ v
20372138--40--8043-----0.0*Fatigue Strength: 100 x 10 6cycles,
2 z# s% X9 K" W) r3 [& f6 v, [. hunless indicated as [N]X 106. # V$ b8 L3 W. t8 n4 T. B3 F/ b0 ~
Physical 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