Steel MS1700 · supply condition · default condition
Steel MS1700-CR
Properties of the CR condition, compared with the other MS1700 tempers.
The standard and essentially only commercial condition: thin cold-rolled strip/sheet (about 0.5–2.5 mm) delivered quenched and low-temperature tempered for 1700 MPa class strength, for roll-formed or lightly bent crash reinforcements.
What is MS1700-CR?
MS1700-CR is MS1700 supplied in the CR condition — the standard and essentially only commercial condition: thin cold-rolled strip/sheet (about 0.5–2.5 mm) delivered quenched and low-temperature tempered for 1700 MPa class strength, for roll-formed or lightly bent crash reinforcements. MS1700-CR has a yield strength of 1,450 MPa (210 ksi) and a tensile strength of 1,780 MPa (258 ksi) — stronger than 97% of steel grades. Elongation at break is 4% and the elastic modulus is 210 GPa (30.5 Msi). MS1700-CR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Advantages
- High strength — 1,450 MPa (210 ksi), better than 97% of steel grades
Limitations
- Limited ductility — 4%, 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 — 12/100, worse than 91% of steel grades
- Low fracture toughness — 50 MPa·√m (45.5 ksi·√in), worse than 87% of steel grades
MS1700-CR properties
Typical room-temperature values for MS1700-CR — 13 properties are specific to this condition; the rest are grade-level values shared by every MS1700 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
MS1700-CR has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical13
MS1700-CR has a yield strength of 1,450 MPa (210 ksi) and a tensile strength of 1,780 MPa (258 ksi) — stronger than 97% of steel grades. Elongation at break is 4% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
MS1700-CR is rated for continuous service to 200°C (392 °F). It conducts heat at 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
MS1700-CR conducts electricity at 8 % IACS, better than 55% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of MS1700-CR takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 55% of steel grades. Typical recycled content is 25%.
Manufacturability7
MS1700-CR's machinability is poor (20/100, worse than 97% of steel grades); weldability good (55/100); formability not recommended (12/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Working with MS1700-CR
Is MS1700 easy to machine?
Treat as ~50 HRC tool steel: laser or die cutting is preferred over drilling/milling; use rigid setups, coated carbide or PCBN, low feeds, and expect rapid edge wear and high punching forces (large die clearance, sheared-edge cracking risk).
Can MS1700 be welded?
Resistance spot welding and laser welding are routine with reduced current/short times, but the HAZ tempers and softens, so keep heat input low, avoid multi-pass arc welding, and never rely on weld metal for full base-metal strength.
Can MS1700 be formed, bent or molded?
Roll forming or simple air bending only, with generous bend radii (roughly 4–6× thickness, transverse to rolling direction), high tonnage, springback compensation and deburred/laser-cut edges; not suitable for deep drawing.
What surface finishes work on MS1700?
Supplied bare and rust-prone: phosphate plus e-coat, powder paint, or zinc-rich primer; avoid acid pickling and electroplating that charge hydrogen into this strength level.
MS1700 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 |
|---|---|---|
| Cgoverns as-quenched martensite hardness | ≤ 0.25 | 0.22 |
| Si | ≤ 0.5 | 0.25 |
| Mnhardenability | ≤ 2 | 1.7 |
| P | ≤ 0.02 | 0.01 |
| S | ≤ 0.01 | 0 |
| Aldeoxidation | 0.02 – 0.1 | 0.04 |
| Cr+Mohardenability additions, mill dependent | ≤ 1 | 0.3 |
| Nb+Tigrain refinement / B protection | ≤ 0.15 | 0.04 |
| B | ≤ 0.01 | 0 |
| Fe | balance | — |
MS1700-CR — frequently asked
What is MS1700-CR used for?
MS1700-CR is typically used for bumper beams, door intrusion beams, rocker and sill reinforcements, B-pillar reinforcements, seat cross-members and roll-formed side-impact tubes. In short: premium martensitic sheet.
What is the yield strength of MS1700-CR?
MS1700-CR has a typical yield strength of 1,450 MPa (210 ksi) and a tensile strength of 1,780 MPa (258 ksi) — stronger than 97% of steel grades.
Is MS1700-CR easy to machine?
Not especially — machinability is rated poor (20/100, worse than 97% of steel grades). Treat as ~50 HRC tool steel: laser or die cutting is preferred over drilling/milling; use rigid setups, coated carbide or PCBN, low feeds, and expect rapid edge wear and high punching forces (large die clearance, sheared-edge cracking risk).
Can MS1700-CR be welded?
Yes — weldability is rated good (55/100). Resistance spot welding and laser welding are routine with reduced current/short times, but the HAZ tempers and softens, so keep heat input low, avoid multi-pass arc welding, and never rely on weld metal for full base-metal strength.
What surface finishes work on MS1700-CR?
Supplied bare and rust-prone: phosphate plus e-coat, powder paint, or zinc-rich primer; avoid acid pickling and electroplating that charge hydrogen into this strength level.
Can MS1700-CR be formed, bent or molded?
Roll forming or simple air bending only, with generous bend radii (roughly 4–6× thickness, transverse to rolling direction), high tonnage, springback compensation and deburred/laser-cut edges; not suitable for deep drawing.
What is the maximum service temperature of MS1700-CR?
MS1700-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.
Can FabDigit make parts in MS1700-CR?
Yes — MS1700-CR is available for sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- VDA 239-100 Sheet Steel for Cold Forming (CR1500Y1700T-MS) — VDA (2016)
- Docol 1700M cold-rolled martensitic steel data sheet — SSAB (2023)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- Advanced High-Strength Steels Application Guidelines — WorldAutoSteel (2021)
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.