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Spring strip steel

Strip steel

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Phone: +44 7721 888695
Email: paul.favell@alleima.com

Paul Favell
Global business development manager

Spring strip steel in an extensive program of stainless steels, precipitation hardening steels and nickel alloys, available in a wide range of sizes and with or without coating.

Spring strip steel

Spring steel is normally supplied with a bright-rolled surface. Other types of surfaces, such as bright-annealed, dull, polished or ground surface can be offered on request. Our spring steel is delivered on spools, in coils, bundles and as lengths.

Materials for a large variety of springs

Our wide range of spring steel covers most requirements on material properties. This means that we can deliver strip steel for a wide range of spring applications, such as springs for electronic devices and mechanical springs.

Our program of spring steel includes the following materials. Other grades, such as martensitic chromium steel and carbon steel can be offered on request.

Austenitic stainless steels
Grade UNS ASTM EN Tensile strength
MPa (ksi)		 Width
mm (in.)		 Thickness
mm (in.)
Alleima®  12R11 (S30100) (301) 1.4310 800-1900
(116-276)		 2-345
(0.08-13.6)		 0.015-3
(0.0006-0.12)
Alleima® 11R51 (S30100) (301) 1.4310 1700-2050
(247-297)		 2-345
(0.08-13.6)		 0.015- 1.5
(0.0006-0.06)
Alleima® 13RM19 - - 1.4369 850-1600
(123-232)		 2-345
(0.08-13.6)		 0.015-3
(0.0006-.12)
Alleima® 3R12* S30403 304L 1.4306 600-1300
(87-189)		 2-325
(0.08-12.8)		 0.015-2
(0.0006-0.08)
Alleima® 2RK65 HV N08904 904LVM 1.4539 * * *
Duplex stainless steels
Grade UNS ASTM EN Tensile strength
MPa (ksi)		 Width
mm (in.)		 Thickness
mm (in.)
SAF™ 2507 S32750 - 1.4410 900-1600
(131-232)		 2-300
(0.08-11.8)		 0.015-3.5
(0.0006-0.14)
Springflex™
  • UNS S32205, S31803
 - 1.4462 1100-2200 (160-319) 2-300 (0.079 - 12) 0.03 - 3.51 (0.0012 - 0.14)

1Depending on requested tensile strength.

Precipitation hardening steels
Grade UNS ASTM EN Tensile strength
MPa (ksi)		 Width
mm (in.)		 Thickness
mm (in.)
Alleima® 9RU10 S17700 631 1.4568 1200-1700
(174-247)		 2-360
(0.08-14.2)		 0.015-3
(0.0006-0.12)
Nanoflex™ - - - 950-1850
(138-268)		 2-330
(0.08-13)		 0.015-2
(0.0006-0.08)
Sanicro® 75X N07750 - - 750- 1350
(109-196)		 2-200
(0.08-7.9)		 0.015-4
(0.0006-0.16)
Nickel alloys
Grade UNS ASTM EN Tensile strength
MPa (ksi)		 Width
mm (in.)		 Thickness
mm (in.)
Sanicro® 75X N07750 - - 750- 1350
(109-196)		 2-200
(0.08-7.9)		 0.015-4
(0.0006-0.16)

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