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Home » Stainless Steel » Product introduction

817M40, 817M40T

  • Numbers: 20101221030
  • Model: 817M40, 817M40T, BS970
  • Producers: China
  • Update time: 2010.12.21
  • Browse:

Product Description:

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.
817M40 is available from stock in round bar and plate, which can be cut to suit your requirements.

 

 

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
Treatment

Tensile
Strength
Rm N/mm²

Yield
Stress
Re N/mm²

a% on
5.665ÖSo

Impact
Izod J

Impact
KCV J

Proof
Stress
rp0.2

Hardness
HB

Size
mm

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:+86-13880247006 | FAX:+86-816-3639422 | E-mail:sales@specialsteel-jy.com | Add:119#,Jiangdong road, Sanhe Town,Jiangyou City, Sichuan Province, China | Zip:621701