Good advice, Bro. STR claims SS makes a better lock than TI. It's all interesting. I'll be glad to have the CQC-7 back. I even thought of asking STR to make an all G-10 slab for the CQC-7.
Let me clarify that statement. Stainless is better in some ways but not so much in others.
Its a toss up. Hardened stainless doesn't indent near as easily as the titanium and based on my own observations stainless wears better and at a slower rate.
From the making standpoint you have very little room for error or inconsistency in your contact angles and fitting for the lock contact on the blade if you are using stainless for your lock. Its been said that many makers love titanium because of its tendency to stick or gall to dissimilar metals and itself. This tendency makes it ideal for liner locks because it tends to make up for some inconsistancy by makers in contact angles where ti will stay put better on an otherwise sharper angle than is ideal when many times a stainless lock one would slide right off that same contact and allow the blade to close and it also allows ti to stay put better when the angle of your contact is ideal.
Ti has better memory and recovery than stainless after severe stress and bends and snaps back to its original shape unless its completely deformed to the tear point where stainless would be permanently bent and ruined.
Ti has the added advantage of lighter weight over stainless.
Ti has the additional feature of allowing you to color anodize it for futher appeal.
Ti does not need heat treated saving makers that expense if they have to mail out what the make out of steel to have it done for them and ti saves them time this way but makes up for the savings in H/T because its higher in price to obtain over stainless.
Stainless sheet is much cheaper and for those those that heat treat themselves its no problem and perhaps the best way to go for money savings if you are a manufacturer.
There is nothing at all wrong with mixing ti and stainless. Zero Tolerance does this in the 301 folder. The non lock liner is stainless on that knife FYI.
By the way, I have stainless sheet steel here I ordered from Jantz supply but it is unhardened. A magnet will not stick to this sheeting. So if that new liner is like the stuff I ordered from Jantz years ago and its not hardened perhaps that magent test is fruitless.
I'm not sure why this is the case but literally every sheet of the 410 stainless I bought from Jantz supply years ago is non magenetic until its hardened. The hardened locks I had Paul Bos heat treat for me of this steel are all magnetic after H/T though.
The real tell will be weight difference I'd suspect. The stainless liner will weigh more than the titanium one from your older knife but also if you want to really see the diff simply touch one to a belt grinder. There is no mistaking titanium that way. I realize its not likely to grind on your folder so its obviously not a good idea but in my shop if I pick up a sheet and can't tell because I had one of the 410 pieces all I have to do is see how much it sparks off the belt and I know instantly what I have in my hand. If its ti it will spark out a nice long trail enough to scare the dogs right out of the shop. Unhardened stainless I can grind all day with them right there under me if I'd let em stay there because they don't notice it.
Stainless does spark some after heat treatment but still no where near the impressive fire works of titanium. I've caught fire to saw dust in the bottom of my band saw cutting ti sheeting for clips, locks and liners and I've seen rags too close to my belt grinder start to smoke from the sparks off the ti as I work it. This has never been a problem or concern with steel really.
STR