Steel MS1300-CR (Cold rolled)
Supply condition · default condition
Specify the bare cold-rolled, quenched-and-tempered martensitic sheet as the 1150 MPa yield baseline for painted parts or internal reinforcements; corrosion protection must be added later.
Values for the CR condition
Other MS1300 tempers and conditions
MS1300 is listed in 2 conditions; see the grade overview at MS1300.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefaultThis page Cold rolled | Specify the bare cold-rolled, quenched-and-tempered martensitic sheet as the 1150 MPa yield baseline for painted parts or internal reinforcements; corrosion protection must be added later. | 1,150 | 1,380 | 5 | 43 HRC | — |
cold rolled, higher tempering for improved bendability | Select the supplier's extra-tempered bendable version when roll forming needs tighter bend radii; tempering trades tensile down to 1330 MPa for 1180 MPa yield and 6 % elongation. | 1,180 | 1,330 | 6 | 41 HRC | 7.8 % IACS |
What is MS1300-CR?
MS1300-CR is MS1300 supplied in the CR condition — specify the bare cold-rolled, quenched-and-tempered martensitic sheet as the 1150 MPa yield baseline for painted parts or internal reinforcements; corrosion protection must be added later. MS1300-CR has a yield strength of 1,150 MPa (167 ksi) and a tensile strength of 1,380 MPa (200 ksi) — stronger than 94% of steel grades. Elongation at break is 5% and the elastic modulus is 207 GPa (30 Msi). MS1300-CR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Advantages
- High strength — 1,150 MPa (167 ksi), better than 94% of steel grades
Limitations
- Limited ductility — 5%, worse than 98% of steel grades
- Difficult to machine — 20/100, worse than 97% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Limited formability — 15/100, worse than 87% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
MS1300-CR properties
Typical room-temperature values for MS1300-CR; 10 are specific to this condition. Other listed values are MS1300 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
MS1300-CR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical14
MS1300-CR has a yield strength of 1,150 MPa (167 ksi) and a tensile strength of 1,380 MPa (200 ksi) — stronger than 94% of steel grades. Elongation at break is 5% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
MS1300-CR is rated for continuous service to 200°C (392 °F). It conducts heat at 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
MS1300-CR conducts electricity at 7.8 % IACS, worse than 57% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of MS1300-CR takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 20%.
Manufacturability7
MS1300-CR's machinability is poor (20/100, worse than 97% of steel grades); weldability good (55/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with MS1300-CR
Is MS1300 easy to machine?
At about 43 HRC conventional punching and machining tools wear extremely fast; laser cutting or high-strength punch materials are preferred. If punching, use generous die clearance and watch sheared-edge crack sensitivity.
Can MS1300 be welded?
Resistance spot welding and laser welding are both usable, but HAZ tempering softens the martensite so joint strength falls below the base metal. Limit heat input, control the welding current profile, and take precautions against hydrogen-induced delayed cracking.
Can MS1300 be formed, bent or molded?
With 3–6 % elongation the grade is limited to roll forming and simple bends; bend radii are normally ≥3–4× material thickness and larger transverse to the rolling direction. Springback is large and requires overbend compensation; deep drawing is not feasible.
What surface finishes work on MS1300?
Corrosion protection is normally zinc coating (GI/GA/EG) plus phosphate and cataphoretic e-coat. Avoid acid pickling and conventional electroplating, which charge hydrogen into the steel; if plating is unavoidable, bake immediately after plating to remove hydrogen.
MS1300 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 |
|---|---|---|
| Cmain element setting martensite strength | 0.13 – 0.25 | 0.19 |
| Si | 0.1 – 0.6 | 0.25 |
| Mnincreases hardenability | 1 – 2.2 | 1.6 |
| P | ≤ 0.02 | 0.01 |
| S | ≤ 0.01 | 0 |
| Aldeoxidizer | 0.02 – 0.1 | 0.04 |
| Cr+Mosupplementary hardenability | ≤ 1 | 0.3 |
| Nb+Tigrain refinement | ≤ 0.15 | 0.04 |
| Btrace boron increases hardenability | ≤ 0.01 | 0 |
| N | ≤ 0.01 | 0.01 |
| Fe | balance | — |
MS1300-CR — frequently asked
What is MS1300-CR used for?
MS1300-CR is typically used for door intrusion beams, bumper reinforcements and roof bows. In short: highest-strength AHSS sheet; roll-forming and simple bends only; anti-intrusion beam standard.
What is the yield strength of MS1300-CR?
MS1300-CR has a typical yield strength of 1,150 MPa (167 ksi) and a tensile strength of 1,380 MPa (200 ksi) — stronger than 94% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is MS1300-CR easy to machine?
Not especially — machinability is rated poor (20/100, worse than 97% of steel grades). At about 43 HRC conventional punching and machining tools wear extremely fast; laser cutting or high-strength punch materials are preferred. If punching, use generous die clearance and watch sheared-edge crack sensitivity.
Can MS1300-CR be welded?
Yes — weldability is rated good (55/100). Resistance spot welding and laser welding are both usable, but HAZ tempering softens the martensite so joint strength falls below the base metal. Limit heat input, control the welding current profile, and take precautions against hydrogen-induced delayed cracking.
What surface finishes work on MS1300-CR?
Corrosion protection is normally zinc coating (GI/GA/EG) plus phosphate and cataphoretic e-coat. Avoid acid pickling and conventional electroplating, which charge hydrogen into the steel; if plating is unavoidable, bake immediately after plating to remove hydrogen.
Can MS1300-CR be formed, bent or molded?
With 3–6 % elongation the grade is limited to roll forming and simple bends; bend radii are normally ≥3–4× material thickness and larger transverse to the rolling direction. Springback is large and requires overbend compensation; deep drawing is not feasible.
What is the maximum service temperature of MS1300-CR?
MS1300-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.
Sources
- VDA 239-100 Sheet Steel for Cold Forming (CR1200Y1300T-MS) — VDA (2016)
- Docol 1300M cold-rolled martensitic steel — SSAB (2023)
- Advanced High-Strength Steels Application Guidelines v7.0 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
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.