Stainless Steel specifications held in the austenitic, martensitic and precipitation hardening varieties. Stocks are held in British Standard and International standards. Below is listed our most commonly supplied grades; please contact our sales office. Also stock is 301 stainless spring temper rolled strip.
Hi - Speed, high Speed Steel Tool Steel (made) : highly processed into the Tool Steel, carbon content high, while containing cr quantity is low (about 4%), reason burnish of Steel surface gloss darker, after heat can reach by HRc62 high hardness, resistance to rust performance not on a roll.
Steel mould and Steel mould suppliers, global delivery, stock supply Steel mould steels.
Heat resistant steel. AS Orlov Izobret. Mashinostr. 3, 48-49, 7/2000. The purpose of this work was to increase plasticity of heat resistant steel after aging at the 500-1300 deg C temperature and to improve its operational reliability.
Comprehensive stocks held of tool steel, including hot work, cold work and plastic mould tool steel specifications. Below we detail our most common grades. Other British Standard and international special steels and tool steels are also available, please contact our sales office.
Supplies Ball bearing steel of all types, along with carbon steel and specialty balls, to OEM's around the world. Also offers platinum balls, brass balls, gold, titanium, aluminum, carbon and plastic balls.
Carbon spring steel is held in a wide range of sizes. Detailed below are our most common specifications. Carbon steel strip and spring steel sheet is available most commonly in the hardened and tempered condition, though certain sizes are available in the annealed condition. Round and flat bar is stocked in the as rolled condition. Most spring steel specifications are held to British Standard steel specifications including BS1449 & BS970.
Alloy steel is steel alloyed with a variety of elements in total amounts of between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0 %.[1][2] Most commonly, the phrase "alloy steel" refers to "low alloy" steels.
817M40, 817M40T
817M40 is a high quality, high tensile, alloy steel . Usually supplied readily machineable as 817M40T. With chromium and molybdenum helping increase the hardenability of 817M40 and the nickel content increasing the toughness and resistance to impact of 817M40. When supplied as 817M40T it combines high tensile strength, shock resistance, good ductility and resistance to wear. |
TYPICAL ANALYSIS |
817M40 |
|
|||
C. |
Si. |
Mn |
Ni. |
Cr. |
Mo. |
0.40% |
0.30% |
0.60% |
1.50% |
1.20% |
0.25% |
Hardening:
Heat the 817M40 component uniformly to 823/850°C until heated through. Quench in oil.
Tempering:
Heat uniformly and thoroughly at the selected tempering temperature, up to 660°C and hold at heat for two hours per inch of
total thickness. Tempering between 250-375°C in not recommended for 817M40 as this can seriously reduce the steels
impact value.
Stress Relieving:
Heat slowly to 650-670°C, soak the 817M40 tool well before cooling in a furnace or in air.
Mechanical Properties 817M40
Heat |
Tensile |
Yield |
a% on |
Impact |
Impact |
Proof |
Hardness |
Size |
T |
850/1000 |
654 |
13 |
40 |
35 |
635 |
248/302 |
>150≤250
|
T |
850/1000 |
680 |
13 |
54 |
50 |
665 |
248/302 |
>63≤250
|
U |
925/1075 |
755 |
12 |
47 |
54 |
740 |
269/331 |
>29≤100
|
V |
1000/1150 |
850 |
12 |
47 |
42 |
835 |
293/352 |
>13≤63 |
W |
1075/1225 |
940 |
11 |
40 |
35 |
925 |
311/375 |
>6≤29 |
X |
1150/1300 |
1020 |
10 |
34 |
28 |
1005 |
345/401 |
>6≤29 |
Z |
1550 |
1235 |
5 |
10 |
9 |
1125 |
444 |
>6≤29 |
Stainless Steel Suppliers | Hi-Steel HSLA-80 | Steel mould | Heat resistant steel | Tool Steel | Ball bearing steel | Spring steel | Alloy
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TEL:+86-15328239557 | FAX:+86-816-3639422 | E-mail:sales@specialsteel-jy.com | Add:119#,Jiangdong road, Sanhe Town,Jiangyou City, Sichuan Province, China | Zip:621701