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DIN 1.6587 18CrNiMo7-6 Case Hardening Steel Bar

Group Quenched and Tempered Steel Bar
Min. Order 3 ton
Terms of Payment L/C, T/T
Update Time 2019-06-03
Item specifics
Diameter50-550mm
Delivery conditionHot forged, Hot rolled, QT
Surfac conditionBlack

Application of 1.6587 steel:

Severely stressed components for mechanical engineering and automobile industry, gear for mining, cement plants, power plants, mobile cranes and earth-moving equipment, paper mill, sugar mill, marine, wind gear, railway systems, oil platform, etc.

Quality Standard of 1.6587 steel:

EN 10084 Case hardening steels

Chemical Composition of 1.6587 steel (%)

C

Mn

Si

P

S

Cr

Ni

Mo

0.15-0.21

0.50-0.90

0.40 max

0.025 max

0.025 max

1.50-1.80

1.40-1.70

0.25-0.35

Mechanical Properties of 1.6587 steel: (T=20°C if not differently stated)

Process

Diameter(mm)

Tensile Strength Rm (Mpa)

Yield Strength Rp0.2 (Mpa)

Elongation A5 (%)

Area Reduction Ratio C (%)

Impact Value Kv (J) Room Temperature

Hardness (HB)

SOFT ANNEALED

/

/

/

/

/

/

229 max

NORMALIZED

/

/

/

/

/

/

140-210

QUENCHED AND TEMPERED

11 max

1180-1420

835 min

7 min

30 min

44 min

354-406

QUENCHED AND TEMPERED

43829

1080-1320

785 min

8 min

35 min

44 min

327-384

QUENCHED AND TEMPERED

31-63

980-1270

685 min

8 min

35 min

/

295-373

QUENCHED AND TEMPERED

100-160

1000-1200

800 min

11 min

50 min

45 min

295-353

QUENCHED AND TEMPERED

160-250

1000-1200

800 min

11 min

50 min

45 min

295-353

Heat treatment of 1.6587 steel:

Soft Annealing: Heat 17CrNiMo6 to 650-700℃, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.

Normalizing: 850-880℃, air.

Hardening: Carburising: 880-980oC. Core Hardening: 830-870℃, water. Case Hardening: 780-820℃, water.

Tempering: Temperature: 150-200℃

Forging: Hot forming temperature: 1100-900℃.