Steel TRIP600-CR (Cold rolled)
Supply condition · default condition
Standard uncoated cold-rolled coil/sheet for parts that get e-coat or are welded into protected assemblies.
Values for the CR condition
Other TRIP600 tempers and conditions
TRIP600 is listed in 2 conditions; see the grade overview at TRIP600.
- CR
- HR
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefaultThis page Cold rolled | Standard uncoated cold-rolled coil/sheet for parts that get e-coat or are welded into protected assemblies. | 390 | 650 | 29 | 14 HRC | 6.5 % IACS |
Hot rolled | For chassis/suspension and wheel parts above ~2.5 mm where hot-rolled TRIP with slightly lower elongation is adequate. | 420 | 640 | 25 | 15 HRC | 6.5 % IACS |
What is TRIP600-CR?
TRIP600-CR is TRIP600 supplied in the CR condition — standard uncoated cold-rolled coil/sheet for parts that get e-coat or are welded into protected assemblies. TRIP600-CR has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 64% of steel grades. Elongation at break is 29% and the elastic modulus is 207 GPa (30 Msi). TRIP600-CR has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,450°C (2,642 °F).
Advantages
- Forms and bends easily — 84/100, better than 94% of steel grades
- Ductile — tolerates forming and impact — 29%, better than 91% of steel grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
- Low electrical conductivity — 6.5 % IACS, worse than 77% of steel grades
- Difficult to machine — 40/100, worse than 77% of steel grades
TRIP600-CR properties
Typical room-temperature values for TRIP600-CR; 23 are specific to this condition. Other listed values are TRIP600 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
TRIP600-CR has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical17
TRIP600-CR has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 64% of steel grades. Elongation at break is 29% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
TRIP600-CR is rated for continuous service to 200°C (392 °F). It conducts heat at 40 W/m·K (23.1 BTU/hr·ft·°F), worse than 64% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
TRIP600-CR conducts electricity at 6.5 % IACS, worse than 77% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (11/100), worse than 73% of steel grades.
Sustainability4
Producing a kilogram of TRIP600-CR takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 25%.
Manufacturability6
TRIP600-CR's machinability is fair (40/100, worse than 77% of steel grades); weldability good (64/100); formability very good (84/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with TRIP600-CR
Is TRIP600 easy to machine?
Rarely machined: blank, laser or fine-blank instead; if drilled/milled use rigid setups, sharp coated carbide and low speed because rapid work hardening and austenite-to-martensite transformation raise cutting forces and edge wear.
Can TRIP600 be welded?
Resistance spot welding is standard but the current/force window is narrow — use longer weld times, post-weld tempering pulses and expect reduced cross-tension ductility; laser and MAG welding work with low-hydrogen, matching-to-undermatched consumables, and zinc-coated versions need LME precautions.
Can TRIP600 be formed, bent or molded?
Exploit the high n-value with stretch-dominant forming; plan 15–25 % higher press tonnage than mild steel, generous draw radii, strong blank-holder control and springback/edge-stretch compensation, and avoid sharp sheared edges to limit delayed and edge cracking.
What surface finishes work on TRIP600?
Not decorative on its own — hot-dip Zn, galvanneal, electrogalvanize or Zn-Al-Mg plus phosphate and e-coat; paint bake at 170–180 °C also gives a modest bake-hardening yield increase, and avoid acid or cathodic processes that inject hydrogen.
TRIP600 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Ccarbon enrichment of retained austenite is essential to the TRIP effect | 0.1 – 0.25 | 0.19 |
| Sisuppresses carbide formation during bainitic hold; high Si complicates hot-dip galvanizing | 0.3 – 2 | 1.5 |
| Mnaustenite stabilizer, hardenability | 1 – 2 | 1.6 |
| Alpartial Si substitute in galvanizing-friendly TRIP variants | 0.02 – 1.5 | 0.05 |
| Psome grades use up to ~0.1 % P as carbide suppressor | ≤ 0.04 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Nboptional grain refiner | ≤ 0.06 | 0.02 |
| Tioptional microalloy | ≤ 0.06 | — |
| N | ≤ 0.01 | 0.01 |
| Fe | balance | — |
TRIP600-CR — frequently asked
What is TRIP600-CR used for?
TRIP600-CR is typically used for complex-shaped structural parts, wheel rims and seat components. In short: best stretch formability at 600 MPa; high work-hardening TRIP grade; bake-hardening response after paint.
What is the yield strength of TRIP600-CR?
TRIP600-CR has a typical yield strength of 390 MPa (56.6 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 64% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is TRIP600-CR easy to machine?
Not especially — machinability is rated fair (40/100, worse than 77% of steel grades). Rarely machined: blank, laser or fine-blank instead; if drilled/milled use rigid setups, sharp coated carbide and low speed because rapid work hardening and austenite-to-martensite transformation raise cutting forces and edge wear.
Can TRIP600-CR be welded?
Yes — weldability is rated good (64/100). Resistance spot welding is standard but the current/force window is narrow — use longer weld times, post-weld tempering pulses and expect reduced cross-tension ductility; laser and MAG welding work with low-hydrogen, matching-to-undermatched consumables, and zinc-coated versions need LME precautions.
What surface finishes work on TRIP600-CR?
Not decorative on its own — hot-dip Zn, galvanneal, electrogalvanize or Zn-Al-Mg plus phosphate and e-coat; paint bake at 170–180 °C also gives a modest bake-hardening yield increase, and avoid acid or cathodic processes that inject hydrogen.
Can TRIP600-CR be formed, bent or molded?
Exploit the high n-value with stretch-dominant forming; plan 15–25 % higher press tonnage than mild steel, generous draw radii, strong blank-holder control and springback/edge-stretch compensation, and avoid sharp sheared edges to limit delayed and edge cracking.
What is the maximum service temperature of TRIP600-CR?
TRIP600-CR is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between TRIP600-CR and TRIP600-HR?
CR is the default condition — standard uncoated cold-rolled coil/sheet for parts that get e-coat or are welded into protected assemblies. HR: for chassis/suspension and wheel parts above ~2.5 mm where hot-rolled TRIP with slightly lower elongation is adequate. Yield strength is 390 MPa in CR versus 420 MPa in HR.
Sources
- EN 10346 — Continuously hot-dip coated steel flat products for cold forming — CEN (2015)
- GB/T 20564.4 — Cold rolled high strength steel sheet for automobile, Part 4: TRIP steel — SAC (2010)
- SAE J2745 — High Strength Steel Sheet, TRIP grades — SAE International (2019)
- Advanced High-Strength Steels Application Guidelines v6 — WorldAutoSteel (2017)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- TRIP / DP cold-rolled automotive steel datasheets — ArcelorMittal / voestalpine / thyssenkrupp / Baosteel (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.