1.2519 steel heat treat help

D

DevinT

Joined
Jan 29, 2010
Messages
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I'll be heat treating some test coupons in this steel in a few days, anyone with experience heat treating this stuff, help me out please.

Hoss
 
Looking at the composition, after cycling, I would think 1470-1490f would be the sweet spot. Similar to hitachi blue, O7, 115w8.
 
Roman Landes said to austenitize at 800-820 °C (as quick as possible: preheated kiln or better, salts)
Soak 5-8 minutes at temp, quench in oil. Normalization usually not necessary, (do stress relieving in case of extensive machining before HT) and careful, because playing too much with normalizing/annealing could cause formation of unwanted WC, lowering the available carbon...not so easy to undo in that case, due to the high stability of WC.
Temper at 200 °C for 63+ HRc as final working hardness.
My source of 1.2519 (Germany) behaves as illustrated by Roman, i am very happy with this steel.
 
stezann said:
Roman Landes said to austenitize at 800-820 °C (as quick as possible: preheated kiln or better, salts)
Soak 5-8 minutes at temp, quench in oil. Normalization usually not necessary, (do stress relieving in case of extensive machining before HT) and careful, because playing too much with normalizing/annealing could cause formation of unwanted WC, lowering the available carbon...not so easy to undo in that case, due to the high stability of WC.
Temper at 200 °C for 63+ HRc as final working hardness.
My source of 1.2519 (Germany) behaves as illustrated by Roman, i am very happy with this steel.
Click to expand...
This is the same HT I have used. did a couple mules with 325F temper, tested 64-65 HRc, no issues with chipping.
 
Awesome stuff. A little deeper hardening than 115W8 (1.2442), probably not quite as wear resistant, either, but an excellent steel for thin edges at high hardness (tough and wear resistant). I've done 1490F austenitizing (10 minute soak), and also tried 1525F austenitizing (10 minute soak), P50 quenches (technically too fast for 1.2519). 400F tempers still around 62-63HRC. I don't normalize or cycle the stuff at all. It is extremely fine grained, and they did a good job annealing this stuff, too.

Because CFV is no longer produced, I really wish the O7 steels were more readily available here in the states, (115W8 would be awesome) where knife makers can buy bars (instead of sheets direct from Bestar or whomever) to play with. One can dream. Aldo was looking into 1.2519, haven't heard the latest tho. Now, that aside, if there was ONE carbon oil quench steel I wish we could get our hands on, besides Ao Super, it would be F2, hands down, hands on, hands up, hands off, whatever! I want it! C: 1.3% Cr: .3% W: 3.5% V: .25% (Super Blue Lite)
 
as said on forum a couple of times before, I wish one of the larger knife suppliers would sell 1.2519 or 1.2419 or 1.2842. Bestar imports all 3 from Germany, but their smallest pieces would be almost a years supply at my current production rate. All 3 of these steels need the most basic HT to perform well. No heat over 1500F, no cryo, no extended normalize cycles, no multiple quenches, no super fast quench oil, 1.2519 is a true high performance steel that almost any maker can heat treat themselves and get good results.
 
I did a short run of large kitchen knives from 1.2519 years back and still have a few in stock. Customers have all been very pleased. 2519 is an excellent carbon steel and widely used here in Germany.
 
Our old friend from B-U/Voestalpine Strip Jeff Sinko now works for Bestar in Atlanta. Someone needs to have a chat with him about this stuff and O2.
 
jdm61 said:
Our old friend from B-U/Voestalpine Strip Jeff Sinko now works for Bestar in Atlanta. Someone needs to have a chat with him about this stuff and O2.
Click to expand...
I talked to one of the other folks in that office. they can bring in 1.2519, 1.2842(O2), 80CrV2(this may be where AKS gets theirs), 1.2419(super O1) and a bunch of other good stuff. https://www.bestar-steel.com/products/steel-groups/tool-steel/ for me, I have no way to cut a 2'x6' sheet of steel.
 
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