I always get mightily confuddled by various steel grades and types. Oh, I have the basics from 304 to 316 down pat, but when our Steve at Steel Strip mentioned to me that he’d started selling small quantities of spring steel I had to scurry off to Wikipedia to find out what spring steel actually was. All we get is this paltry stub:
Spring steel is a low alloy, medium carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape despite significant bending or twisting.
Silicon is the key component to most spring steel alloys. An example of a spring steel used for cars would be AISI 9255 (DIN and UNI: 55Si7, AFNOR 55S7), containing 1.50%-1.80% silicon, 0.70%-1.00% manganese and 0.52%-0.60% carbon.
Most spring steels (as used in cars) are hardened and then tempered to about 45 on the Rockwell C-Scale.
According to Machinery’s Handbook, “The spring materials most commonly used include high-carbon spring steels, alloy spring steels, stainless spring steels, copper-base spring alloys, and nickel-base spring alloys.” According to the same, the most widely used spring steel is ASTM A228 (0.80–0.95% carbon) known as “music wire”.
I presume we’re not talking about slinky spring steel?
It makes a change to hear of somebody prepared to service the little guy…..as it were. Here’s Steve’s raison d’etre and combined mission statement:
Whilst steel mills regularly insist on minimum order quantities of up to 5 tons, and stockholders upwards of a ton, we have recognised the need of smaller engineering companies who may require as little as a single sheet to complete a project, or to replace a part in an aging piece of plant.
It can be frustrating and time consuming for an engineer to spend hours on the telephone trying to source small quantities of spring steel, only to find the supplier loses interest the moment he realises the small quantity involved. To be honest it’s as a big a problem often for the supplier as for the customer! Not for us.
So, if you’re looking to buy spring steel in small quantities I’d recommend you go and have a word with Steve over at Steel Strip as he’s a top bloke. Or, you can give him a bell on 01709 740166. (Yes, he can ship worldwide.)
Oh, and I can assure you I’m not on any commission. I just like it when people aren’t trying to stiff smaller companies – especially when they happen to be a mate. 
Comments
herwan
on 30/11/2010, 6:16 am
Together We Have The location and address of the following telephone number can we Contact in connection with Steel Springs
Similarly, we convey thanks
Herwan Basri
0818685078
konrad snowden
on 9/7/2010, 5:19 pm
can you tell me how much a sheet of .7 spring steel is
mbeck
on 26/5/2010, 5:32 am
Im trying to find out what size spring steel is used in the collapsible windshield shades. Or is that even spring steel? Any help in this matter would be greatly appreciated. Thanks
D Adcock
on 20/3/2010, 11:37 am
I require 2 off 2m lengths of 8 mm dia. spring steel. can any onr point me to a supplier.
Ton van Leeuwen
on 28/1/2010, 5:58 pm
Please your attention about straight spring stainless steel bars .
Already a long time I’m looking for straight stainless steel bars for fishing/float steel.
The cross-sections are 0.4, 0.5, 0.6 and 1.0 mm thickness.
This spring steel must be straight after bending about 90 degrees.
In the Netherlands this spring steel can buy in several shops but it is not stainless spring steel.
The spring steel bars must be stainless steel because this are used for fishing/float steel bars.
My question is if you know were I can buy this (AISI) material. In that case I first want receive some prototypes/testing material.
Therhaps you can help me.
Kind regards,
Ton van Leeuwen
shazia
on 13/1/2010, 8:29 am
can you tell me what are the tests that are applied on the finished product of spring steel for testing it?
NIU
on 24/9/2009, 8:19 pm
Hi, I am from a university in the united states, and we are looking for .3125 in spring steel. I checked
http://www.steelstrip.co.uk/BSS/stockholding.htm
and they only go up to .25 inches. Do you have any sources that would be able to provide .3125 spring steel?
Paul Woodhouse
on 24/9/2009, 9:55 pm
I’d get in touch with Steve at SteelStrip. He’s in a much better position to answer your question.
Gary Sprake
on 14/9/2009, 11:01 am
Try these guys…very helpful
Gaz
Paul Woodhouse
on 23/7/2008, 1:06 am
Please note that we here at Butler Sheetmetal don’t supply spring steel. You’ll have to ring the number in the post or follow the link to the website.
The number to ring is:
44 1952 290313
I thank you.
Paul Woodhouse
on 21/7/2008, 8:41 pm
Which number did you ring?
44 1952 290313
or 01282 870033.
g.h.rayner
on 21/7/2008, 8:34 pm
You have a very impressive page which starts with SRING STEEL STRIP.But when I telephone you to enquire about this you tell me you do not sell Spring steel strip
.Can you explain this ? or is your web site a myth?
G.H.Rayner
Paul Woodhouse
on 24/4/2008, 11:56 am
That’s such a shame about your mother. There’s nothing worse than having a niggling medical problem that you can never quite alleviate.
Unfortunately, I’m not the guy to speak to – I only provided the link. I also wouldn’t want to be responsible for any medical uses you might have for spring steel.
Sorry I can’t be of much help.
Robert Klein
on 20/4/2008, 1:53 am
Dear Sir/Madam,
I have a Mother(81 yrs. old) that has had feet problems for most of her entire life and she is always trying to make shift something to relieve her pain. She gave me an idea when I saw something she tried to make work, it made me think when I was a kid I remember a spring steel piece something that was very thin and flat like maybe about three inches wide and about the same in length and I could flip it back and forth with a finger and it was a very light spring action, I could bend it almost in-two and it would spring right back to where it was originally. I would say that it would respond to about 7 oz. to 9 oz. of pressure maybe a little less or a little more, I believe that will give you an idea of the gentleness of the spring steel that I think I might need. It needs to be quite thin. I have a feeler gauge(used for adjusting the valves on the cars) that it looks like about 9 to 10 thousands that seems to be in the ball park for the strength I think we would need. I was just wondering since you are the best place I had found on the Internet I just thought just maybe you kind people would be able to steer me in the right direction to be able to find the material I am looking for, so at least I might be able to try to help my sweet Mother. May God bless You for trying to help me. I live in Arlington, Washington of the U.S.ofA.
I will be patiently waiting for a response from someone.
Robert L. Klein
My CELL Phone # 425 293 7239
THANK YOU!
Tik
on 17/5/2011, 2:31 pm
yes