AISI 8620 Steel | 1,6523 | 21NiCrMo2 | SNCM220
Luv hauj lwm:
AISI 8620 Steel yog ib tug tsis tshua muaj hlau npib tsib xee, chromium, molybdenum cov ntaub ntawv hardening steel, feem ntau nkag nyob rau hauv lub raws li dov mob nrog ib tug tshaj plaws hardness HB 255max. SAE steel 8620 muaj siab lwm lub dag lub zog thiab zoo internalstrength, ua rau nws mas hnav resistant. AISI 8620 steel muaj ib tug highercore muaj zog tshaj qib 8615 thiab 8617. SAE 8620 hlau steel isflexible thaum lub sij hawm hardening kev kho mob, yog li enabling kev txhim kho ofcase / tub ntxhais zog. Pre tawv thiab tempered (uncarburized) 8620 ca ...
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AISI 8620 Steel
yog ib tug tsis tshua muaj hlau npib tsib xee, chromium, molybdenum cov ntaub ntawv hardening steel,
feem ntau nkag nyob rau hauv lub raws li dov mob nrog ib tug tshaj plaws hardness HB
255max. SAE steel 8620 muaj siab lwm lub dag lub zog thiab zoo nrog
lub dag lub zog, ua rau nws mas hnav resistant. AISI 8620 steel muaj ib tug ntau dua
cov tub ntxhais muaj zog tshaj qib 8615 thiab 8617.
SAE 8620 hlau steel yog
saj zawg zog thaum lub sij hawm hardening kev kho mob, yog li enabling kev txhim kho ntawm
rooj plaub / tub ntxhais zog. Pre tawv thiab tempered (uncarburized) 8620 yuav
tsum ntxiv nto tawv los ntawm nitriding tab sis yuav tsis teb
satisfactorily rau nplaim taws los yog induction hardening vim nws uas tsis muaj
cov ntsiab lus.
Steel 8620 yog suited rau daim ntaub ntawv uas yuav tsum tau ib tug
ua ke ntawm toughness thiab hnav kuj. Qhov no qib no feem ntau
cov khoom nyob rau hauv round bar.
1. AISI 8620 Steel Mov Ntau
8620 Round Bar: txoj kab uas hla 80mm - 1200mm
8620 Steel Phaj: thickness 10 hli - 1500 hli x dav 200mm - 3000mm
8620 Square Bar: 140mm - 460mm
8620 hlab no kuj muaj nyob rau koj cov ncauj lus kom ntxaws thov.
Deg Finish: Black, Rough machined, Muab los yog raws li ib muab yuav tsum.
2. SAE 8620 Steel Specification thiab Yam Standards
|
Lub teb chaws |
TEB CHAWS USA | DIN | BS | BS |
Nyiv |
|
Standard |
ASTM A29 | Din 1654 | EN 10084 |
BS 970 |
JIS G4103 |
|
qib |
8620 |
1,6523 / |
1,6523 / |
805M20 |
SNCM220 |
3. ASTM 8620 Steels & Equilvalents Tshuaj Muaj pes tsawg leeg
| Standard | Qib | C | Mn | P | S | si | ni | Kr | mo |
| ASTM A29 | 8620 | 0.18-0.23 | 0.7-0.9 | 0,035 | 0,040 | 0.15-0.35 | 0.4-0.7 | 0.4-0.6 | 0.15-0.25 |
| Din 1654 | 1,6523 / 21NiCrMo2 |
0.17-0.23 | 0.65-0.95 | 0,035 | 0,035 | ≦ 0.40 | 0.4-0.7 | 0.4-0.7 | 0.15-0.25 |
| EN 10084 | 1,6523 / 20NiCrMo2-2 |
0.17-0.23 | 0.65-0.95 | 0,025 | 0,035 | ≦ 0.40 | 0.4-0.7 | 0.35-0.70 | 0.15-0.25 |
| JIS G4103 | SNCM220 | 0.17-0.23 | 0.6-0.9 | 0,030 | 0,030 | 0.15-0.35 | 0.4-0.7 | 0.4-0.65 | 0.15-0.3 |
| BS 970 | 805M20 | 0.17-0.23 | 0.6-0.95 | 0,040 | 0,050 | 0.1-0.4 | 0.35-0.75 | 0.35-0.65 | 0.15-0.25 |
4. AISI 8620 Steel Neeg kho tshuab khoom
-
8620 Lub Cev khoom:
Ceev (lb / cu. Nyob rau hauv.) 0.283
Cov ntiajteb txawj nqus 7.8
Kev Thaum tshav kub kub (Btu / lb / Deg F - [32-212 Deg F]) 0.1
Melting Point (Deg F) 2600
Thermal conductivity 26
Mean Coeff Thermal Expansion 6.6
modulus ntawm elasticity Nro 31
-
8620 Steel Neeg kho tshuab khoom
| Properties | Metric | imperial |
| tensile zog | 530 MPa | 76900 psi |
| yield zog | 385 MPa | 55800 psi |
| elastic modulus | 190-210 GPA | 27557-30458 ksi |
| Tej modulus (raug rau steel) | 140 GPA | 20300 ksi |
| Shear modulus (raug rau steel) | 80 GPA | 11600 ksi |
| Poisson tus piv | 0.27-0.30 | 0.27-0.30 |
| Izod Impact | 115 J | 84,8 ft.lb |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (hloov dua siab tshiab los ntawm Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B (hloov dua siab tshiab los ntawm Brinell hardness) | 80 | 80 |
| Hardness, Vickers (hloov dua siab tshiab los ntawm Brinell hardness) | 155 | 155 |
| Machinability (kub dov thiab txias kos, raws li nyob rau hauv 100 machinability rau AISI 1212 steel) | 65 | 65 |
5. Forging ntawm Material 8620 Steel
AISI
8620 hlau steel yog forged ntawm ib tug pib kub ntawm ib ncig ntawm 2250ºF
(1230ºC) down mus rau kwv yees 1700ºF (925ºC.) Ua ntej mus rau lub hardening
tshav kub kev kho mob los yog carburizing. Cov hlau yog huab cua txias tom qab forging.
6. ASTM 8620 Steel Thaum tshav kub kub kho mob
-
Annealing
AISI
8620 steel tej zaum yuav muab ib tug tag nrho anneal los ntawm tshav kub mus rau 820 ℃ - 850 ℃, thiab tuav
kom txog rau thaum kub yog niaj hnub thoob plaws hauv lub seem thiab txias nyob rau hauv lub cub tawg
los yog huab cua txias.
-
tempering
tempering
ntawm tshav kub kho thiab dej quenched qhov chaw ntawm 8620 steels (tsis
carburized) yog ua nyob 400 F rau 1300 F los txhim kho cov ntaub ntawv toughness nrog
tsawg heev ntxim rau nws cov hardness. Qhov no kuj yuav txo qhov tau ntawm
kev sib tsoo kab nrib pleb.
-
hardening
Lub
AISI steel 8620 yuav austenitized nyob ib ncig ntawm 840 ° C - 870 ° C, thiab cov roj
los sis cov dej quenched nyob raws li qhov seem me me thiab intricacy. Txias nyob rau hauv huab cua
los yog roj yuav tsum tau.
-
normalizing
1675ºF
(910ºC) thiab cua txias. Qhov no yog lwm cov qauv ntawm cov kev txhim kho machinability
nyob rau hauv 8620 cov khoom; normalizing tej zaum kuj yuav siv ua ntej mus cov ntaub ntawv
hardening.
7. Machinability ntawm SAE 8620 Steel
Lub
8620 hlau steel yog nkag machined tom qab thaum tshav kub kub kev kho mob thiab / los yog
carburizing, yuav tsum tau yam tsawg kawg thiaj li tsis mus tsis tau qhov tawv
cov ntaub ntawv ntawm ib sab. Machining tej zaum yuav ua los ntawm cov pa txhais tau tias ua ntej
thaum tshav kub kub kev kho mob - tom qab carburizing machining yog feem ntau yog tas rau
kev sib tsoo.
8. Vuam ntawm 8620 ntaub ntawv
Lub
hlau 8620 tej zaum yuav welded li kuav los tiag mob los ntawm cov pa txoj kev,
feem ntau yog cov roj los yog arc welding. Preheating ntawm 400 F yog lig thiab
tom ntej cua kub tom qab vuam yog pom zoo - sab laj rau kev pom zoo
weld txoj kev rau txoj kev siv. Txawm li cas los, vuam nyob rau hauv rooj plaub
tawv los yog los ntawm tawv mob yog tsis pom zoo
9. Daim ntawv thov ntawm ASTM 8620 Steel
AISI
8620 steel khoom siv feem los ntawm tag nrho cov kev lag luam sectors rau
lub teeb rau nruab nrab nyuab siab Cheebtsam thiab shafts tau siab nto
coj kuj nrog tsim nyog tub ntxhais lub zog thiab tej yam khoom.
Raug
daim ntaub ntawv yog: Arbors, Bearings, bushings, Cam shafts, plawg
Pinions, Guide Pins, King Pins, Pistons Pins, Zog, Splined shafts,
Ratchets, Tsho thiab lwm yam kev siv qhov twg nws yog yuav pab tau kom muaj ib tug
steel uas yuav tau yooj yim machined thiab carburized rau tswj cov ntaub ntawv
depths.
