Hardened and Tempered High Carbon Steel Strips

Hardened Tempered High Carbon Steel Strips

Baomit’s production team properly harden and temper high carbon steel strips to satisfy the most demanding specifications of our customers. The strength, durability and flexibility of high carbon steel make it suitable for many high strength applications. The particular AISI/SAE 1075 & 1095 high carbon steel we offer are used by the automotive, blade, and aerospace industries, for example, and in the manufacture of products like blades, power springs, saws, automotive parts, washers, and more.

Parameters	Recommendation
Thickness Tolerance	T1 – T5
Roughness	Class 1 – 3
Flatness	Class 1 – 4
Surface	Bright, White / Blue / Yellow Polished
Edges	Deburring, Square, Round
Hardness	41 – 57 HRC
Thickness	0.10 – 4.50 mm
Width	3 – 460 mm
Steel Grade	1050, 1055, 1075, 1095, SK5, SK4, SK2, C67S, C75S, C100S

Hardened Tempered High Carbon Steel Strips

Our Advantages:

• Precise thickness and width tolerances

• Maximum straightness deviation of 1 mm / 6 m

• Good surface finish

• Excellent punching and stamping properties

• Consistent, uniform microstructure

Steel Grades

Comparison of Norms
USA / AISI	EU / EN	Chemical Composition
SAE1075	C75S	C: 0.70-0.80, Si: 0.15-0.35, Mn: 0.60-0.90, Ni: max 0.40, P: max 0.025, S: max 0.025, Cr: max 0.40, Mo: max 0.10
SAE1095	C100S	C: 0.95-1.05, Si: 0.15-0.35, Mn: 0.30-0.60, Ni: max 0.40, P: max 0.025, S: max 0.025, Cr: max 0.40, Mo: max 0.10

Manufacture Process

Cold Rolling

Slitting

Heat Treatment

Surface Polishing

Edging

Packaging

Thickness Tolerances

Thickness (mm)	Tolerances ± mm
Thickness (mm)	T1	T2	T3	T4	T5
0.020 – 0.040	0.004	0.003	0.002	–	–
0.040 – 0.100	0.006	0.005	0.004	0.003	0.002
0.100 – 0.125	0.007	0.005	0.004	0.003	0.002
0.125 – 0.160	0.009	0.006	0.005	0.004	0.003
0.160 – 0.200	0.010	0.007	0.005	0.004	0.003
0.200 – 0.250	0.011	0.008	0.006	0.004	0.003
0.250 – 0.400	0.015	0.011	0.008	0.006	0.004
0.400 – 0.600	0.020	0.014	0.010	0.007	0.005
0.600 – 0.800	0.023	0.017	0.012	0.008	0.006
0.800 – 1.000	0.027	0.019	0.013	0.009	0.007
1.000 – 1.250	0.034	0.024	0.017	0.012	0.008
1.250 – 1.600	0.039	0.028	0.020	–	–
1.600 – 1.750	0.046	0.033	0.023	–	–

Width Tolerances

Thickness (mm)	Width (mm)	Tolerances ± mm
Thickness (mm)	Width (mm)	W1	W2	W3
≤0.25	≤50	0.10	0.07	0.05
	50 – 125	0.15	0.11	0.07
	>125	0.20	0.15	0.10
0.25 – 0.50	≤50	0.15	0.11	0.07
	50 – 125	0.20	0.15	0.10
	>125	0.25	0.20	0.15
0.50 – 1.00	≤50	0.20	0.15	0.10
	50 – 125	0.25	0.20	0.15
	>125	0.30	0.25	0.15
1.00 – 1.60	≤50	0.20	0.15	0.10
	50 – 125	0.30	0.25	0.15
	>125	0.35	0.25	0.20
1.60 – 1.75	≤50	0.30	0.20	0.15
	50 – 125	0.35	0.30	0.20
	>125	0.40	0.30	0.20

Surface Roughness

Available in white polished, blue polished and yellow.

Thickness (mm)	Roughness
Thickness (mm)	Class 1	Class 2	Class 3
≤0.50	Ra≤ 0.30 µm Rt≤ 3.00 µm	Ra≤0.25 µm Rt≤ 2.50 µm	Ra≤ 0.20 µm Rt≤ 2.00 µm
0.50 – 1.00	Ra≤ 0.35 µm Rt≤ 3.50 µm	Ra≤ 0.25 µm Rt≤ 2.50 µm	Ra≤ 0.20 µm Rt≤ 2.00 µm
1.00 – 1.75	Ra≤ 0.40 µm Rt≤ 4.00 µm	Ra≤ 0.30 µm Rt≤ 3.00 µm	Ra≤ 0.30 µm Rt≤ 3.00 µm

Flatness Deviation

Maximum flatness deviation per inch strip width.

Thickness (mm)	Flatness Deviation
Thickness (mm)	Class 1	Class 2	Class 3	Class 4
0.02 – 0.10	P60	P50	P40	P30
0.10 – 0.25	P50	P40	P30	P20
0.25 – 0.50	P40	P30	P20	P10
0.50 – 1.75	P35	P25	P15	P10

Straightness Deviation

Strip Width (mm)	Measured Length (3m)
Strip Width (mm)	Class 1	Class 2	Class 3
≤50	3 mm	2 mm	1 mm
50 – 125	3 mm	2 mm	1 mm
>125	3 mm	2 mm	1 mm

Hubei Baomit Steel Materials Co., Ltd.

Leading manufacturer of hardened and tempered high carbon steel strips 1075/1095/C67S/C75S/C100S/SKS51/SK4/SK5.

Baomit strip steel stands for precision, quality and high performance. Our material is excellent in terms of comprehensive delivery indicators, such as straightness, flatness, mechanical properties and metallographic uniformity.