Hardox AR 500 damage.

[User00056]

Deleted due to me talking bollox after failing to properly read the OP

 

[Buchan]

I've been quoted, and seen in reading a 3000fps limit for Hardox 500. However I can't find evidence for this or if this is 3000 muzzle velocity or at the target. This might be an issue as a lot of loading for non lead suggests 3000fps to get expansion

I've found papers on testing Hardox at quite short ranges and my take is that the 3000 fps should be at the target, not the firing point at the target. (eg High Performance and Optimum Design of Structures and Materials II)

So with normal stalking rounds at 200m there really isn't an issue as bullets will be doing under 3000fps and impact probably below 4000J which seems to be the limit

Has anyone better data please?

 

[3.5mag]

I've a Tom's Targets (original) fox head that's been hammered at around 110yds with.223 40gr @ 3650, .243 75gr @ 3150.
No craters at all.
Have a fox body supposedly of hardox from a local gunship that is deeply cratered & nearly perforated.

 

[GWP]

I had a square cut from hardox 450 from a tipper body 60gr poly tipped varmints no problem 55gr sierras holed looked like it was drilled 100yrd from a 22-250 took it back to the guy that gave it to me and he said thats impossible although he had the evidence in his hand i never did try the 6.5 swede

 

[Bowland blades]

Use a hard facing rod as that is what they are meant for 7018 under it if its a thick plate . Its the speed but also the Chinese junk we import into the UK is like i say junk and its getting worse melt by melt !
A target that will swing freely helps

 

[wytonpjs]

Use a hard facing rod as that is what they are meant for 7018 under it if its a thick plate . Its the speed but also the Chinese junk we import into the UK is like i say junk and its getting worse melt by melt !
A target that will swing freely helps

I once condemned £7m of mooring equipment (shackles, rings, etc) brought in from China with genuine certificates of conformity from a well-known classification society, speedily followed by a T45 destroyer’s anchor chain cable set. Took one of the Ketner shackles from that set up to Solid Swivel in the Midlands and load tested it - it went at one third of the rated load! The 3 parts of the shackle were then subject to metallurgical examination which confirmed they were from 3 very different melts, contrary to specifications. Absolute rubbish!

 

[8x57]

I once condemned £7m of mooring equipment (shackles, rings, etc) brought in from China with genuine certificates of conformity from a well-known classification society, speedily followed by a T45 destroyer’s anchor chain cable set. Took one of the Ketner shackles from that set up to Solid Swivel in the Midlands and load tested it - it went at one third of the rated load! The 3 parts of the shackle were then subject to metallurgical examination which confirmed they were from 3 very different melts, contrary to specifications. Absolute rubbish!

A friend who worked for a crane and lifting equipment company passed similar comments some years ago. Apparently his firm were sceptical of Chinese chains and shackles being supplied and the claims being made for strength and their light weight in comparison to traditional suppliers. His firm submitted samples for test and the chains were found to be extremely brittle.

 

[Foxyboy43]

Well I have splurged squillions of dosh on a genuine Temu Hardox plate which arrived this very a.m. sooo I am off to the range where I will subject it to .17hmr, .222 and finally .308. I have every confidence in this wonderful bargain sure where would you get it….

 

[angel eyes]

I’m interested to see results,

 

[jb1]

I have 6 hardox ftom 30cm down to 10cm shot them at 100yds with 17 rem to 30.06 the worst damage are minor dents from the 17. The targets are probably all over 10 years old. Sounds like quality has dropped considerably.

 

[Foxyboy43]

Well I have splurged squillions of dosh on a genuine Temu Hardox plate which arrived this very a.m. sooo I am off to the range where I will subject it to .17hmr, .222 and finally .308. I have every confidence in this wonderful bargain sure where would you get it….

View attachment 436999

So, picked up ten bags of wheat and fed the phezzies then off to my range to test the bargain plate….
Sodding field is occupied!
The saga continues….

 

[jb1]

So, picked up ten bags of wheat and fed the phezzies then off to my range to test the bargain plate….
Sodding field is occupied!
The saga continues….

View attachment 437037

Bloody farmers and their livestock lol Av a word

 

[jb1]

Are the cattle still in there ???

 

[Bowland blades]

My friend and I use a gong, as above, mainly for longer range target shooting but also occasionally for checking zero at 100m. We typically shoot 243, 6.5 x 55, 260 Rem, 308 and 270 using target and hunting bullets (not copper). I recently checked zero at 100m using a 22-250, factory 55g varminter and proceeded to punch a hole in the gong. I was shocked as this bullet carried less energy than any of the other calibres we use.

Is it possible to get Hardox 500 repaired? The gong is large and cost £200 a few years ago so it would be nice not to have to replace it.

a hard facing rod is the best bet , you need a a welding plant that is able to run these electrodes

 

[Foxyboy43]

Are the cattle still in there ???

All died of old age but at least I was able to try the Temu “bargain”plate with the triple deuce and the 6.5x55 - both hit with some authority and make a very positive clang but providing they are free hanging absolutely no ill effects.

 

[Tim.243]

a hard facing rod is the best bet , you need a a welding plant that is able to run these electrodes

HF is for wear with only a thin layer compared to the parent metal, if you tried to build up a thick layer with HF on hardox the heat will let the hardox target down, we often "hot spot" hardox with the oxy/acl in order to anneal that area so it can be drilled.

Hard Face is for wear not impact as often it is put down in a XXX patten on cultivator legs as a wear face.

3 years ago the ground was so hard everyone was losing points as the head of the 10.9nm bolt was wearing off and the points lost so massive down time, I cut 25x40x60 pieces of ar450 and 3 side welded them in front of the bolt and nut, X amount of hours we swapped the points over for a fresh set of modified points with nothing lost in the field.

 

[finnbear270]

Slightly off subject, but still relevant ... I had many cases of being supplied Polish produced steel stock, that was extremely hard in some areas of supposed EN8 grade, drill bits would scream & go dull straight off, some fabrications would develop cold cracks in areas not welded or heat treated.

 

[Tim.243]

Slightly off subject, but still relevant ... I had many cases of being supplied Polish produced steel stock, that was extremely hard in some areas of supposed EN8 grade, drill bits would scream & go dull straight off, some fabrications would develop cold cracks in areas not welded or heat treated.

Angle iron sometimes I have found to have hard spots, where it should drill easy but the smoking tip of the drill said other things.
@Bowland blades wear not impact

 

[finnbear270]

Angle iron sometimes I have found to have hard spots, where it should drill easy but the smoking tip of the drill said other things.

Lots of that stuff, used to drive me bonkers.

 

[Heym SR20]

High impact velocities is whats required for armour penetration. High velocities give much higher energy on the point of the bullet as it hits the steel and there is enough energy to turn harden steel into soft molten steel which is then pushed through the target leaving a hole.

I was shown a steel target where the little 17 hornet had punched straight through.