ASTM A240 S41008 ASTM A240 / A240M Kev Taw Qhia
Cov hlau cov khoom tiv thaiv corrosion txhais tau hais tias nws yog ib qho kev xaiv zoo rau qhov chaw uas yuav tsum tau raug rau cov huab cua hnyav los yog thaj chaw ntawm salinity siab, xws li marine thiab ntug hiav txwv dej. Qhov no txhawb nqa cov hlau tsim nyog rau cov ntawv thov uas xav tau kev txhim kho durability thiab kev ua haujlwm ntev.
ASTM A240 S41008 ASTM A240/A240Myog ib qho ntawm cov khoom tseem ceeb ntawm peb lub tuam txhab. Lwm yam tshaj li muab cov khoom zoo A240 S41008 nrog cov nqi sib tw, peb kuj pab daws txhua yam kev tsis txaus siab ntawm cov neeg siv khoom. Xws li A240 S41008 tshuaj muaj pes tsawg leeg, A240 S41008 cov khoom, A240 S41008 tawm lub zog, A240 S41008 tensile lub zog, A240 S41008 sib npaug qib, thiab lwm yam. Meanwhile, peb kuj ua cov txheej txheem rau ASTM4 A204, ASTM 20, ASTM A20 dabtsi yog khoov, welding, drilling thiab lwm yam.
Daim ntawv thov:Thaum tshav kub kub-resistant chrome thiab chrome-nickel stainless hlau nplooj ntawv, nplooj ntawv thiab strips rau cov hlab ntsha siab.
Thaum tshav kub kub kho:1186 degree - 1731 degree .
ASTM A240 S41008 ASTM A240 / A240M Tshuaj Element
Carbon, Silicon, Manganese, Phosphorus, Sulfur yog hu ua "Tsib Elements". Lawv yog cov impurities tseem ceeb hauv steel. Carbon txhim kho steel hardness. Silicon ntxiv dag zog rau cov hlau. Manganese pab txhawb kom cov hlau ruaj khov, lub zog thiab hnav tsis kam. Phosphorus txo cov hlau plasticity thiab toughness thiab tshwm txias brittleness. Lub caij no, Nws tuaj yeem ua kom muaj zog ntawm cov hlau, thiab txhim kho atmospheric corrosion stability. Sulfur ua rau kub brittleness ntawm steel siab.
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| Si | - | 1.0000 | - |
| S | - | 0.0300 | - |
| P | - | 0.0400 | - |
| Ni | - | 0.6000 | - |
| Mn | - | 1.0000 | - |
| Cr | 11.5000 | 13.5000 | - |
| C | - | 0.0800 | - |
ASTM A240 S41008 ASTM A240 / A240M Mechanical Properties
ASTM A240 S41008 ASTM A240 / A240M cov khoom siv kho tshuab yuav tsum ua raws li cov txiaj ntsig tau muab rau hauv cov lus hauv qab no.
| Yield Rp0.2(MPa) |
Tensile Rm(MPa) |
Kev cuam tshuam KV/Ku (J) |
Elongation A (%) |
Kev txo qis hauv ntu ntu ntawm pob txha Z (%) |
Raws li-kub-kho mob | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 241 (Ntau dua lossis sib npaug) | 518 (Ntau dua lossis sib npaug) | 11 | 13 | 32 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 141 |
ASTM A240 S41008 ASTM A240 / A240M Lub cev muaj zog
ASTM A240 S41008 ASTM A240 / A240M steel yog ntau yam thiab kub-resistant steel featuring austenitic muaj pes tsawg leeg thiab zoo heev tiv thaiv corrosion thiab puas. Nws yog ib qho alloy uas khaws nws cov duab thiab ruaj khov nyob rau hauv ntau qhov kub thiab txias, los ntawm cryogenic mus rau qhov kub thiab txias. ASTM A240 S41008 ASTM A240 / A240M steel yog qhov kev xaiv zoo tshaj plaws rau ntau daim ntawv thov vim nws muaj zog ua ke thiab muaj ntau yam.
Lub cev muaj zog ntawm ASTM A240 S41008 ASTM A240 / A240M steel suav nrog cov khoom zoo, tsis muaj qhov hnyav, ruaj khov, ductility thiab tiv thaiv kev yaig.
| Kub (degree) |
Modulus ntawm elasticity (GPa) |
Lub ntsiab lus coefficient ntawm thermal expansion 10-6/( degree ) ntawm 20 (degree) thiab | Thermal conductivity (W / m· degree) |
Tshwj xeeb thermal muaj peev xwm (J / kg · degree) |
Tshwj xeeb hluav taws xob resistivity (Ω mm² / m) |
Qhov ntom (kg/dm³) |
Poisson tus coefficient, ν |
|---|---|---|---|---|---|---|---|
| 21 | - | - | 0.32 | - | |||
| 553 | 121 | - | 14.3 | 134 | - | ||
| 696 | - | 12 | 23.2 | 213 | 232 |
