manufacturers around the world promote Ultra high tensile steel
this one promote HPF pulak.. lol means to say they not using Ultra high tensile steel to begin with!

who is using 1500 MPa steel? use 1500Mpa and HPF process ah?

lepas tempa is 1500Mpa
means started with much lower strength steel

meanwhile others also got using 1800Mpa steel stock.

and u saying whole car chassis was formed with HPF meh? am sure is only few critical components only la.

i think if start from high figure steel stocks is better and consistent overall strength for the part.

dont know i dont drive bios. at the end if can reach 5star safety means job done. rest of the optimization is about making it light weight and safe fuel.

how about P2 cars? full spec model no 5star ka?

means they know what the market wants. reliability and lower ownership costs.

suddenly master brake cylinder is connected to throttle pedal ..

since when did they manage to cut cost with each car they build? if they did . they wont lose 1.6bil building 100k cars right? i.e. 16k per car in losses.

deswai i dunno why HPF , which is a steel forming technology suddenly end up as a factor to promote safety lol.
just say you got use a few metal parts which achieve ultra high tensile strength la.
and show 3d chassis diagram on those colored parts
example below. no one cares if its HPF or other ways to achieve the strength.

HPF is process la process

its not the product.

maybe as someone above says maybe from 700..all the way to 2000
can use any process that is required to handle it. at the end still state as what strength steel.(product)
not HPF ke cold rolled ke..(process)

NOPE

comes in rolls and sheets also above 1000MPa (not even hot pressed yet)

some steel suppliers data sheet below.
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This post has been edited by ar188: Aug 24 2016, 12:27 AM


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you forgot, that spring back issue that u describe can be attributed due to low elongation is properties (see chart) generally for ultra high strength steels, this as u said affecting formability of the stamp parts.
now got new products that can settle the elongation issue. advance steel products its now in 3rd generation and newer already.



another point, is that the use of high strength steels is so that you use less steel in weight to maintain strength (while meeting highest crash test results) while reducing BIW (body in white) weight, thus improving fuel economy

did proton ever promote that aspect of why top 10 manufacturers use UHSS to save weight thus improve fuel economy? maybe that is what they should be doing to highlight such benefits to lay people who dont know and dont care what HPF is.

This post has been edited by ar188: Aug 24 2016, 01:39 AM

yeah with mentality like you people thats why some businesses are being run into the ground.