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Heat Resistant Cast Steels and Irons

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John King Chains has a long tradition in the production and supply of ferrous iron and steel castings. Formally focusing on cast links for conveyor chains in wear resistant materials this has allowed the business to develop expertise in special iron and steel castings. This includes heat resistant materials used in grate bars for BIOMASS INCINERATION and WASTE INCINERATION.

  • We offer 8 standards of heat resistant cast steels to BS3100 under JK designations (see table).
  • We offer 9 standards of heat resistant alloyed flake and spheroidal graphite irons to BS3468 and EN1561 under JK designations (see table).
  • With cast components material specifications are infinitely variable so OEM standards can be reproduced.
  • Casting processes employed ensure close tolerances to achieve best performance.
  • In-house machining of cast parts for best quality control.
  • Full verification through our management quality system as ISO 9000:2015.
  • Installation package by the Company’s qualified site services team (look here).
  • Samples can be analysed in our in-house laboratory and chemical analysis reproduces exactly or improved as considered appropriate.

Heat Resistant Cast Steel – JK Standards

JOHN KING

Designation

British Standard

Material Designation

American Material Designation

CHEMICAL COMPOSITION

(figs are % maxima except where noted or where range is shown)

Tensile Strength

Proof Stress

CHARPY *

Brinell

Hardness

Elongation

Maximum Operating Temperature

C

Si

Mn

S

P

Ni

Cr

Mo

Cu

%

N/mm2 (T/in2)

Joules

%

°C

13% chromuim steel

JK/HA1

410C21

A743:CA-15

0.15

1.00

1.00

0.04

0.04

1.00

11.5-13.5

540 (35)

370 (24)

152-207

15

750

JK/HA2

420C29

A743:CA-15

0.20

1.00

1.00

0.04

0.04

1.00

11.5-13.5

690 (45)

465 (30)

201-255

11

750

13% chromium 4% nickel steel

JK/HA3

425C11

A743:CA-6NM

0.10

1.00

1.00

0.04

0.04

3.4-4.2

11.5-13.5

0.60

770 (50)

620 (40)

30

235-321

12

800

Chromuim steel for high temps

JK/HC1

452C11

A297:HC

1.00

2.00

1.00

0.06

0.06

4.00

25.0-30.0

1.50

1000

Chromuim steel for high temps

JK/HC2

452C12

1.00-2.00

2.00

1.00

0.06

0.06

4.00

25.0-30.0

1.50

1000

Chromuim steel for high temps

JK/HC3

420C24

0.25

2.00

1.00

0.06

0.06

12.0-16.0

750

Alloy steel for high temperatures

JK/HH

309C35

A297:HH

0.20-0.50

1.50

2.00

0.04

0.04

11.0-14.0

24.0-28.0

1.50

510 (33)

1000

JK/HK

310C40

A351:HK40

0.30-0.50

1.50

2.00

0.04

0.04

19.0-22.0

24.0-27.0

1.50

450 (29)

1150

Heat Resistant Cast Irons – JK Standards

2% Chromium Cast iron

JK/CI/CR2

EN1561

3.0-3.8

2.0-3.0

1.0

0.08

0.10

1.0-2.0

150

(9.7)

207-288

550

16% Chromium Cast iron

JK/CI/CR16

EN1561

1.6-2.4

1.5-2.2

1.0.

0.05

0.10

15-18

340

(22)

400-405

600

Ni resist Cast Iron

JK/CI/F1

BS3468 F1

ASTMA436/84 TYPE 1

3.0 Max

1.5-2.8

0.5-1.5

0.2

13.5-17.5

1.0-2.5

Cu 5.5-7.5

170

(11)

140-220

1-2

750

Ni resist Cast Iron

JK/CI/F3

BS3468 F3

ASTMA436/84 TYPE 3

2.5 Max

1.5-2.8

0.5-1.5

28.0-32.0

2.5-3.5

Cu

0.5 Max

170

(11)

120-215

1-3

800

High silicon

molybdenum SG Iron

JK/DI/SiMo

EN GJS SiMo

2.7-3.5

3.5-4.5

0.5.

0.015

0.07

0.5.0.9.

540

(35)

197-280

750

High silicon

alluminium addition SG Iron

JK/DI/ALSI

EN GJSAlSi

2.3-2.8

4.5-5.2

0.5

0.015

0.07

Al

5.0-5.8.

200

(13)

302-363

900

Ni Resist SG Iron

JK/DI/S2

BS3468 S2

ASTMA436/84 TYPED2

3.0 Max

1.5-2.8

0.5-1.5

0.08

18.0-22.0

1.5-2.5

Cu

0.5 Max

370

(24)

210

(14)

140-230

7-20

750

Ni Resist SG Iron

JK/DI/S3

BS3468 S3

ASTMA436/84TYPE D3

2.5 Max

1.5-2.8

0.5-1.5

0.08

28.0-32.0

2.5-3.5

Cu

0.5 Max

370

(24)

210

(14)

130-200

7.20

800

Ni Resist SG Iron

JK/DI/S5S

BS3468 S5S

ASTMA436/84

2.2 Max

4.8-5.4

1.0 Max

0.08

34.0-36.0

1.5-2.5

Cu

0.5 Max

370

(24)

210

(14)

130-180

850

WEAR RESISTANT STEELS

11-14% austenitic manganese steel

JK/MN

BW10

A128:GrA

1.00-1.25

1,00

11.00 min

0,06

0,07

1000

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