British Material Specification

[SKinzel]

I am looking for an equivalent "American" steel for BS 970605M36T. I looked through the Metals Black Book and searched around the internet but could not find anything on this spec. I am looking into this for someone else and they tell me it is a British standard that is called out on a gear drawing. Does anyone have any info on this spec. or can someone point me to someplace that has it?

Thanks for your help

Stuart Kinzel

 

[Carburize]

Here's what I have on BS 970 M36 T

C .32 -.40
Si .10 - .35
Mn 1.30 - 1.70
Mo .22 - .32

T condition Q & T
Hardness 248 - 302 BHN

UTS 123,000 psi
YS 96,320 psi
Elong. 13%

Limiting section size 2.5-inch

 

[COKA]

Hey, why don't you try the following website. It helped me when I was looking for the equivalent specs.

http://www.key-to-steel.com

Coka

 

[andyenergy]

You'll probably not be able to match exactly the compositions. Condition T only tells you what the minimum mech properites should be as pointed out by carburize.
BS 970 1970 states : harden in oil from 840 - 870 C. Temper at a suitable temperature between 550 and 680 C.


Worldwide guide to equivalent irons and steels 3rd edition lists AISI 4032 in the same group - 0.3 -0.35%C 0.7- 0.9 Mn, 0.2 - 0.3 Mo, 0.035 max S, 0.04max P, 0.2 - 0.0.35 Si, but no mech props listed.

http://www.efunda.com/materials/all...?ID=AISI_4032_M&prop=all&Page_Title=AISI 4032

Product specs ASTM A29 4032, ASTM A304 4032H, ASTM A322 4032. UNS number G4032.

Useful?

Cheers

Andy

 

[SKinzel]

I passed on the information and told the person that we couldn't exactly match the chemistry but that we could manufacture gearing out of material that was equivalent or better for physical properties usin our standard material is 4340 Q&T to 300/340 BHN.

Thanks for the help.

Stuart