US equivalent to 65Mn (Chinese steel) ?

[eks32]

Hi,

I've got hold of some samples of 65Mn stock (.050" thick) that seem
"almost" like stainless. I'm told in China it's considered a
cheap,tough steel good for a lot of applications requiring some
temper.

By this page

http://www.castingsqd.com/products.htm

it seems that 1065
is the closest equivalent, but this stuff doesn't look like any 1065
samples I've seen. Does anyone have any experience with 65Mn, and
could they cite better references for it's equivalent ?

Thanks,

 

[Pressed]

I did not find alot of good documentation, mostly chinese sites, but I found these:

            C           Si          Mn         Cr         Ni         S          P
65Mn  	0,62-0,70   0,17-0,37   0,90-1,20   0,025max   0,025max   0,035max   0,035max

.
China GB1222-84
Russia GOST 14959-79
Japan JIS G 4801-84
USA ASTM A29-93
British BS 1429-80
Germany DIN 17222-79
France NF A35-057-79
ISO 8458-3-92

It's a spring steel with thermal resistance. Also used as the base of diamond coated saw blades.

_______________________________________
Feeling frisky.........

http://www.tailofthedragon.com

 

[TVP]

eks32,

65Mn is equivalent to grade 1065 according to SAE J403. As Pressed mentioned, it is often cold-rolled and heat treated to high strength (called spring temper). ASTM A 29 is a standard for bar steel, so it is not appropriate for cold rolled strip. Grade 1065 is one of the grades covered by ASTM A 682 Standard Specification for Steel, Strip, High-Carbon, Cold-Rolled, Spring Quality, General Requirements for.