Metallurgy? Bent steel thing

[Jonathan Webb]

I have an anchor, the shank of which is very slightly bent & the surveyor didn't like it.

My research leads me to believe it is made of 'high strength steel' of which Wikipedia states "HSLA steels vary from other steels in that they are not made to meet a specific chemical composition but rather to specific mechanical properties. They have a carbon content between 0.05–0.25% to retain formability and weldability. Other alloying elements include up to 2.0% manganese and small quantities of copper" (and a range of other elements).

Does anyone know - if I can cold bend, or red-heat bend it back without compromising the metal's strength?

We have already bought a new main anchor but, if safe, would keep this as our second & ditch the smaller secondary one we already have.
Thanks

 

[Screwdriver]

What type of anchor?

 

[Seano]

How badly bent is it ? I would be leaning towards a gently cold bend on it.

 

[Jonathan Webb]

How badly bent is it ? I would be leaning towards a gently cold bend on it.

Hardly. I haven't got it here, but maybe 5 degrees. I can get it on Saturday.

 

[Jonathan Webb]

What type of anchor?

It's a Danforth.
I didn't major on the anchor side of it as it's just pieces of steel IMO: anything big and steely needs to be structurally sound as it probably has quite a demanding role.

 

[Screwdriver]

Oh ok. A boat anchor...

The "surveyor" comment threw me.

Wouldn't do any harm to heat it but by the time you've got it to a useful temperature, it will burn off any paint and possibly any galv or plating. Either way it will "look" as if it has been through the wars which one assumes will defeat the object. Heating will just make it easier to bend. Stick it under a flypress/hydraulic press and it will straighten up no bother.

 

[Rig Pig]

Why not buy this reasonably priced painting of one in good condition instead?

I've a sneaky suspicion that he may have to wait a while before anyone buys that!

 

[addjunkie]

Is the shaft bent side to side, or in the direction of the tangs. Danfoths are prone to getting fouled. And before one goes diving or cutting the rode, a quick whiz around in a circle often frees them, but puts a large strain on the shank, as it pulls it in a direction is not designed to pull in.

Personally think a fisherman is a better second anchor, cqr at the bow. Danforths are quite popular though as they are easy to store.

 

[TechnicAl]

therr are lots of diffetent alloy steels. some of them embrittle at 450 oC...othrrs have different proprties.....without knowing the exact grade no one can say what effect straightening may have....

 

[Jonathan Webb]

Why not buy this reasonably priced painting of one in good condition instead?View attachment 160204

I've a sneaky suspicion that he may have to wait a while before anyone buys that!

That's more than my boat cost.

 

[Jonathan Webb]

The attached photo just about shows the bendage.
FWIW, and to allay concerns, we now have a nice new 10kg Lewmar Delta, which is a decent size for us.
Thanks for the input - the usual "it'll be fine " to "you'll knacker it".
I'll put the bent anchor in the special corner, to be decided on mañana.

 

[dannyp]

Wats the worst it can do. Fall off and stay in the drink ,,,,,

Boff it under a press and give it a squeeze