ASTM A519 (SA519) 4140 Seamless Steel Yeeb Nkab
Lub ntsiab lus tseem ceeb
Ib tug qauv rauseamless, txias/kub- ua tiav cov pa roj carbon thiab alloy steel mechanical tubing, nrogSAE/AISI 4140yog ib qho ntawm nws cov qhab nia tshaj plaws. Qhov no yogtsis yoglub siab yeeb nkab txheem, tab sis tus qauv rausiab -lub zog mechanical Cheebtsam.
Lub npe piav qhia
| Ib feem | Lub ntsiab lus |
|---|---|
| ASTM / SA | ASTM International / Society of Automotive Engineers (SA prefix qhia tias nws tseem yog ASME Boiler Code khoom) |
| A519/SA519 | Standard specification rau seamless carbon thiab alloy steel mechanical tubing |
| 4140 | Qhov tshwj xeeballoy steel qib(SAE/AISI 4140) |
| Seamless | Tsis muaj longitudinal weld seam |
Cov yam ntxwv tseem ceeb ntawm Qib 4140
| Feature | Kev piav qhia |
|---|---|
| Hom khoom | Chromium{0}}Molybdenum Alloy Steel(Cr-Mo) |
| Cov yam ntxwv tseem ceeb | Siab zog & toughness, zoo hnav tsis kam |
| Hom Mob | Normalized & Temperedlos yogQuenched & Tempered(rau lub zog siab tshaj) |
| Machineability | Zoo (nyob rau hauv annealed mob) |
| Weldability | Ncaj ncees (yuav tsum tau ua ntej / tom qab-weld heat treatment) |
Cov cuab yeej cuab yeej cuab tam (4140)
| Khoom | Normalized & Tempered | Quenched & Tempered |
|---|---|---|
| Yield zog | ~ 60 ksi (415 MPa) | 100+ ksi (690+ MPa) |
| Tensile zog | ~ 90 ksi (620 MPa) | 120+ ksi (825+ MPa) |
| Hardness | ~ 200 HB | 28-32 HRC(tus qauv) |
Cov lus sib piv: ASTM A519 4140 vs. API 5L X70
| Yam | A519 4140 | API 5L X70 |
|---|---|---|
| Hom Lub Hom Phiaj | Mechanical Cheebtsam | Siab piping(roj/gas) |
| Khoom siv | Hlau alloy(Cr, Mo) | Micro{0}} alloyed steel(Nb, V, Ti) |
| Cov khoom tseem ceeb | Siab zog-rau- hnyav, machinability | Weldability, tawg toughness, HIC kuj |
| Kev siv yam | Shafts, gears, thooj voos kheej kheej, tshuab qhov chaw | Hloov cov kav dej |
| Hom Ntawv | Precision tubing, tuav | Loj - txoj kab uas hla |
Cov ntawv thov siv
Fais fab kis shafts(lub cev muaj zog, iav, tsav ncej)
Hydraulic cylinder chimthiab piston pas nrig
Gears, spindles, thiab axleshauv automotive thiab machinery
Cov cuab yeej tuavthiab cov cuab yeej siv tshuab
Roj & roj cov cuab yeej downhole(mandrels, subs)
Siab -cov qauv kev nyuab siab
Nco tseg: ASTM A519 Cov Lus Qhia Tshwj Xeebyog tus qauv tubing dav dav, thaumSAE/AISI 4140txhais cov chemistry. Rau kev siv siab, cov khoom siv no yuav raug tswj hwm los ntawm cov qauv zoo liASTM A335 Cov Lus Qhia Tshwj Xeebrau alloy steel yeeb nkab. Nws yog feem ntau muab raws li ib tughollow barrau machining.
