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Solid solution steels

Description

Solid solution steels are designed to provide high strength while maintaining good drawability. These steels are hardened in particular by the presence of phosphorous in solid solution in ferrite.

Their combination of mechanical strength and drawability makes these grades suitable for numerous applications.

Solid solution steels are aluminium-killed grades with lower drawing performance than the IF range of steels.

Applications

Some examples of structural parts are shown below:

  • Longitudinal beam in CR240P (thickness: 1.8 mm)

  • Crossmembers in CR240P

Designation and standard

Show all
ArcelorMittal name Generic name Euronorms JFS ABNT NBR
CR180P P180 RP-180
CR210P P210 / P220 HC220P (+ZE) JSC340W / JAC340W RP-210 / ZARP-210
CR240P P240 / P260 HC260P (+ZE) JSC390W / JAC390W RP-240 - RP-270 / ZARP-240 - ZARP-280
CR280P P280 / P300 HC300P (+ZE) RP-300 / ZARP-300
CR180P / P180
Euronorms
JFS
ABNT NBR RP-180
CR210P / P210 / P220
Euronorms HC220P (+ZE)
JFS JSC340W / JAC340W
ABNT NBR RP-210 / ZARP-210
CR240P / P240 / P260
Euronorms HC260P (+ZE)
JFS JSC390W / JAC390W
ABNT NBR RP-240 - RP-270 / ZARP-240 - ZARP-280
CR280P / P280 / P300
Euronorms HC300P (+ZE)
JFS
ABNT NBR RP-300 / ZARP-300


  • Euronorms

    Uncoated (EN 10268: 2006 + A1: 2013): Steel grade name
    Electrogalvanized (EN 10268: 2006 + A1: 2013 + EN 10152: 2017): Steel grade name+ZE

Mechanical properties

Show all
ArcelorMittal name Generic name Direction Yield stress Rp0.2 (MPa) Tensile strength Rm (MPa) Type 1 Min. A50mm (%) Type 2 Min. A80mm (%) Type 3 Min. A50mm (%) Min. r0-20 Min. rm-20 Min. n10-20/Ag
CR180P P180 RD 180 - 240 ≥ 300 35 33 39
CR210P P210 / P220 RD 210 - 270 320 - 400 34 32 35 1.1 1.2 0.17
CR240P P240 / P260 RD 240 - 300 340 - 440 31 29 32 1.0 1.1 0.16
CR280P P280 / P300 RD 280 - 340 385 - 450 30 29 31 1.0 1.0 0.16
CR180P / P180
Direction RD
Yield stress Rp0.2 (MPa) 180 - 240
Tensile strength Rm (MPa) ≥ 300
Type 1 Min. A50mm (%) 35
Type 2 Min. A80mm (%) 33
Type 3 Min. A50mm (%) 39
Min. r0-20
Min. rm-20
Min. n10-20/Ag
CR210P / P210 / P220
Direction RD
Yield stress Rp0.2 (MPa) 210 - 270
Tensile strength Rm (MPa) 320 - 400
Type 1 Min. A50mm (%) 34
Type 2 Min. A80mm (%) 32
Type 3 Min. A50mm (%) 35
Min. r0-20 1.1
Min. rm-20 1.2
Min. n10-20/Ag 0.17
CR240P / P240 / P260
Direction RD
Yield stress Rp0.2 (MPa) 240 - 300
Tensile strength Rm (MPa) 340 - 440
Type 1 Min. A50mm (%) 31
Type 2 Min. A80mm (%) 29
Type 3 Min. A50mm (%) 32
Min. r0-20 1.0
Min. rm-20 1.1
Min. n10-20/Ag 0.16
CR280P / P280 / P300
Direction RD
Yield stress Rp0.2 (MPa) 280 - 340
Tensile strength Rm (MPa) 385 - 450
Type 1 Min. A50mm (%) 30
Type 2 Min. A80mm (%) 29
Type 3 Min. A50mm (%) 31
Min. r0-20 1.0
Min. rm-20 1.0
Min. n10-20/Ag 0.16


A80mm %: Percentage elongation after fracture using a specimen with gauge length L0 = 80 mm (ISO 6892-1 type 2 (EN20x80))
A50mm %: Percentage elongation after fracture using a specimen with gauge length L0 = 50 mm (ISO 6892-1 type 1 (ASTM12.5x50) or type 3 (JIS25x50)
A%: Percentage elongation after fracture using a proportional specimen with L0 = 5.65 (So)1/2
Ag %: Percentage plastic extension at maximum force
BH2: Increase in yield strength between a reference condition after a 2% plastic pre-strain and the condition obtained after heat treatment (170°C-20minutes)

Chemical composition

Show all
ArcelorMittal name Generic name Max. C (%) Max. Si (%) Max. Mn (%) Max. P (%) Max. S (%) Min. Al (%) Max. Ti (%) Max. Nb (%) Max. Cu (%)
CR180P P180 0.06 0.5 0.7 0.1 0.03 ≥ 0.015 0.3 0.05 0.2
CR210P P210 / P220 0.08 0.5 0.7 0.1 0.025 ≥ 0.015 0.2
CR240P P240 / P260 0.10 0.5 1.0 0.1 0.03 ≥ 0.01 0.2
CR280P P280 / P300 0.08 0.5 0.7 0.1 0.025 ≥ 0.02 0.2
CR180P / P180
Max. C (%) 0.06
Max. Si (%) 0.5
Max. Mn (%) 0.7
Max. P (%) 0.1
Max. S (%) 0.03
Al (%) ≥ 0.015
Max. Ti (%) 0.3
Max. Nb (%) 0.05
Max. Cu (%) 0.2
CR210P / P210 / P220
Max. C (%) 0.08
Max. Si (%) 0.5
Max. Mn (%) 0.7
Max. P (%) 0.1
Max. S (%) 0.025
Al (%) ≥ 0.015
Max. Ti (%)
Max. Nb (%)
Max. Cu (%) 0.2
CR240P / P240 / P260
Max. C (%) 0.10
Max. Si (%) 0.5
Max. Mn (%) 1.0
Max. P (%) 0.1
Max. S (%) 0.03
Al (%) ≥ 0.01
Max. Ti (%)
Max. Nb (%)
Max. Cu (%) 0.2
CR280P / P280 / P300
Max. C (%) 0.08
Max. Si (%) 0.5
Max. Mn (%) 0.7
Max. P (%) 0.1
Max. S (%) 0.025
Al (%) ≥ 0.02
Max. Ti (%)
Max. Nb (%)
Max. Cu (%) 0.2


Global availability


Under development     Customer trials     Commercial unexposed only     Commercial exposed and unexposed    

Show all
ArcelorMittal name Generic name Uncoated (-UNC) Extragal® (-GI) Galvannealed (-GA) Electrogalvanized (-EG)
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300
Show all
ArcelorMittal name Generic name Uncoated (-UNC) Electrogalvanized (-EG)
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300
Show all
ArcelorMittal name Generic name Uncoated (-UNC) Extragal® (-GI) Galvannealed (-GA)
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300
Show all
ArcelorMittal name Generic name
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300
Show all
ArcelorMittal name Generic name Uncoated (-UNC) Electrogalvanized (-EG)
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300
Show all
ArcelorMittal name Generic name
CR180P P180
CR210P P210 / P220
CR240P P240 / P260
CR280P P280 / P300

Under development
Customer trials
Commercial unexposed only
Commercial exposed and unexposed

CR180P / P180
Coating Global view EUR NAM SAM RSA CHI
Uncoated (-UNC)
Extragal® (-GI)
Galvannealed (-GA)
Electrogalvanized (-EG)
CR210P / P210 / P220
Coating Global view EUR NAM SAM RSA CHI
Uncoated (-UNC)
Extragal® (-GI)
Galvannealed (-GA)
Electrogalvanized (-EG)
CR240P / P240 / P260
Coating Global view EUR NAM SAM RSA CHI
Uncoated (-UNC)
Extragal® (-GI)
Galvannealed (-GA)
Electrogalvanized (-EG)
CR280P / P280 / P300
Coating Global view EUR NAM SAM RSA CHI
Uncoated (-UNC)
Extragal® (-GI)
Galvannealed (-GA)
Electrogalvanized (-EG)
Microstructure of grade CR240P

Microstructure of grade CR240P

Forming

The figure below shows examples of forming limit curves for CR210P and CR240P steels in 1.0 mm thickness.

Forming limit curves for CR210P and CR240P (thickness: 1.0 mm) (ArcelorMittal model for Europe)

Forming limit curves for CR210P and CR240P (thickness: 1.0 mm) (Keeler model for North America)

Please contact us for more information about forming Solid Solution steels.

Welding

Solid solution steels can be readily welded by all welding processes.

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