631 yog ib qho austenitic nag lossis daus hardening stainless hlau, yog ib yam ntawm austenitic instability ntawm stainless hlau, no steel khoom tov lub xeev, chav tsev kub rau austenite lub koom haum, tom qab txias ua hauj lwm, txias txias, los yog cua sov txog li 750 degrees los kho cov kev kho mob. , austenite tuaj yeem hloov mus rau hauv martensite, thiab tom qab ntawd kho kev laus, hauv martensite matrix tuaj yeem ua rau lub sijhawm thib ob kom ntxiv dag zog rau cov hlau. Lub luag haujlwm ntawm Al yog rau lwm cov ntsiab lus los tsim cov nag lossis daus hardening theem xws li (Ni3Al). Hauv cov txheej txheem kev laus, kev ua kom txias tsis tuaj yeem ua kom pom tseeb, txwv tsis pub, nws yog qhov nyuaj kom ua tiav cov txiaj ntsig ntxiv dag zog.
Chemical Composition (%) ntawm Stainless Hlau 631
| C, max | Mn, mas | P, max | S, max | Si, max | Cr | Ni | Cu, max | Al |
| 0.09 | 1.00 | 0.035 | 0.030 | 1.00 | 16.00-18.00 | 6.50-7.75 | 0.50 | 0.75-1.50 |
Mechanical Properties ntawm Stainless hlau 631
| Tensile zog, MPa, min | Yield zog, MPa, min | Elongation (%) | Impact, KV/Ku (J) | Kev txo qis hauv ntu ntu ntawm pob txha Z (%) | Raws li-kub-kho kev coj | Hardness, HWB |
| 718 | 171 | 24 | 31 | 41 | Kev daws thiab Kev laus, Annealing, Ausaging, Q ntxiv T, thiab lwm yam. | 324 |
Lub cev muaj zog ntawm Stainless hlau 631
| 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 Capacity (J / kg· degree) | Kev tiv thaiv hluav taws xob tshwj xeeb (Ω mm² / m) | Qhov ceev (kg / dm³) | Poisson's Coefficient |
| 24 | - | - | 0.24 | - | |||
| 782 | 752 | - | 32.3 | 321 | - | ||
| 651 | - | 24 | 33.2 | 321 | 322 |
Qib sib npaug ntawm Stainless Hlau 631
| Qib | EN | AFNOR | BS | SS | GOST | ISO |
| 631 | X7CrNiAl17-7 | Z9CNA17-07 | 301S81 | 2388 | 09 KH17 N7YU | X7CrNiAl17-7 |
Daim ntawv thov ntawmStainless hlau 631
631 yog dav siv nyob rau hauv kho vajtse thiab chav ua noj, shipbuilding, petrochemical, machinery, tshuaj, zaub mov, hluav taws xob, lub zog, thiab lwm yam.
