630 (17-4 PH) vs 631 (17-7 PH) Precipitation-Hardening Stainless Steels: Versatile vs Aerospace-Grade Strength

 

Dab tsi yog lawv cov ntsiab lus tseem ceeb thiab qhov sib txawv ntawm kev ua haujlwm tseem ceeb?

630 muaj 15–17.5% Cr, 3–5% Ni, 3–5% Cu, 0.15–0.45% Nb-yield zog ~ 1100MPa (H900), zoo tagnrho rau industrial parts.631 nta 16–18% Cr, 6.5–7.75% Al{1.10000000000000000 00000000000; ~1380MPa (TH1050), superior rau aerospace Cheebtsam.Ob leeg yog cua sov{23}} kho kom kho lub zog / toughness.

Yuav ua li cas lawv cov khoom haum rau cov kev siv sib txawv?

630 yog siv rau cov roj thiab roj downhole cov cuab yeej, orthopedic implants (sib npaug zog / biocompatibility).631 dominates aircraft tsaws iav, missile Cheebtsam (siab zog + cryogenic toughness).

Lawv cov txheej txheem kho cua sov txawv li cas?

630: Kev daws anneal 1040 ° C → quench → hnub nyoog 480 ° C (max zog) los yog 620 ° C (zoo dua toughness).631: Tshuaj anneal 1065 ° C → quench → hnub nyoog 510 ° C (nce siab zog) + txias ua hauj lwm (boosts hardness).

Tus nqi thiab kev tsim khoom lag luam yog dab tsi- tawm?

630 yog 15-20% pheej yig dua 631, ua rau nws PH qib default rau industrial siv.631 muaj qis formability tshaj 630, yuav tsum tau tshwj xeeb fabrication rau aerospace qhov chaw.

Cov txheej txheem tseem ceeb yog dab tsi?

Tsis yog qib zoo ib puag ncig marine -siv 316L rau corrosion kuj.Prioritize 630 rau kev lag luam siab - lub zog qhov chaw; xaiv 631 rau aerospace-qib zog / toughness.