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SmCo

Product Category:

Rare-earth Magnet

Materials from LIHE include both Rare-Earth Magnets and Non- Rare-earth Magnets. Rare-Earth Magnets are of higher performance while Non- Rare-Earth Magnets are of cheaper price. LIHE always tries to provide its customers appropriate materials according to their actual requirements.

As previously stated, Rare-Earth Magnets are of higher performance than Non-Rare-Earth Magnets.

Nd-Fe-B magnets (both Sintered and Bonded) and Sm-Co magnets (Sintered) are the major Rare-Earth magnetic materials of LIHE.

Although these two magnets can be substituted by each other where operating temperature is less than 80。C, there still exits some feature differences. The price of Nd-Fe-B magnets is relatively lower. The (BH) max of Nd-Fe-B magnets can reach to 48MGOe, which is higher than that of Sm-Co magnets. However, Sm-Co magnets have special advantages also. Besides its better corrosion & oxidation resistance, Sm-Co magnets have better temperature stability. Sm-Co magnets can be operated at higher temperature up to 300。C, while Nd-Fe-B magnets can not stand temperature over 180C°.


Specifications for SmCo

acteristics  

Residual
Flux Br

Coercive Force HcbIntrinsic
   Coercive Force Hcj

Max. Enery
Product

  (BH)max
Curie
   Temp Tc
Density ρ


Temp.Coefficient
△Bd/Bd
  Thermal
       Expansion
       coefficient

Vickers
Hardness


Material GradeTesal (kGs)KA/m
       (kOe)
KA/m
       (kOe)
kJ/m3
       (MGOe)
(℃)g/cm3(%/℃)C⊥
       (1℃)
C∥
       (1℃)
Hv
1:5  SmCo5SM~180.80~0.90
       (8.0~9.0)
621~700
       (7.8~8.8)
≥1990
       (≥25.0)
127~159
       (16.0~20.0)
750~8008.2~8.4-0.0513×10-66×10-6450~500
SM~200.90~0.95
       (9.0~9.5)
676~740
       (8.5~9.3)
≥1432
       (≥18.0)
151~167
       (19~21)
750~8008.2~8.4-0.0513×10-66×10-6450~500
SM~220.95~1.00
       (9.5~10.0)
716~756
       (9.0~9.5)
≥1194
       (≥15.0)
167~183
       (21~23)
750~8008.2~8.4-0.0513×10-66×10-6450~500
2:17  Sm2
       (Co,Cu,Fe,Zr) 17
SM~18T0.85~0.95
       (8.5~9.5)
636~716
       (8.0~9.0)
≥1592
       (≥20.0)
127~159
       (16.0~20.0)
850~9008.3~8.5-0.0111×10-68×10-6500~600
SM~22T0.95~1.00
       (9.5~10.0)
676~756
       (8.5~9.5)
≥1592
       (≥20.0)
159~191
       (20.0~24.0)
850~9008.3~8.5-0.0111×10-68×10-6500~600
SM~22L0.95~1.00
       (9.5~10.0)
477~637
       (6.0~8.0)
493~716
       (6.2~9.0)
159~191
       (20.0~24.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~22H0.95~1.00
       (9.5~10.0)
557~756
       (7.0~9.5)
637~1194
       (8.0~15.0)
159~191
       (20.0~24.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~22U0.95~1.00
       (9.5~10.0)
716~796
       (9.0~10.0)
≥1990
       (≥25.0)
159~191
       (20.0~24.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~26L1.00~1.08
       (10.0~10.8)
477~637
       (6.0~8.0)
493~716
       (6.2~9.0)
191~223
       (24.0~28.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~26H1.00~1.08
       (10.0~10.8)
557~836
       (7.0~10.5)
637~1194
       (8.0~15.0)
191~223
       (24.0~28.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~26U1.00~1.08
       (10.0~10.8)
756~836
       (9.5~10.5)
≥1990
       (≥25.0)
191~223
       (24.0~28.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~28L1.04~1.10
       (10.4~11.0)
477~637
       (6.0~8.0)
493~716
       (6.2~9.0)
207~239
       (26.0~30.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~28H1.04~1.10
       (10.4~11.0)
557~836
       (7.0~10.5)
637~1194
       (8.0~15.0)
207~239
       (26.0~30.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~28U1.04~1.10
       (10.4~11.0)
756~836
       (9.5~10.5)
≥1990
       (≥25.0)
207~239
       (26.0~30.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~30L1.08~1.12
       (10.8~11.2)
477~637
       (6.0~8.0)
493~716
       (6.2~9.0)
223~247
       (28.0~31.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~30H1.08~1.12
       (10.8~11.2)
557~836
       (7.0~10.5) ~10.2).0~10.5)
637~1194
       (8.0~15.0)
223~247
       (28.0~31.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~30U1.08~1.12
       (10.8~11.2)
796~859
       (10.0~10.8)
≥1990
       (≥25.0)
223~247
       (28.0~31.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600
SM~321.10~16
       (11.0~11.6)
       (26.0~30.0)
557~836
       (7.0~10.5)
≥637
       (≥8.0)
≥239
       (≥30.0)
800~8508.3~8.5-0.0311×10-68×10-6500~600




bonded magnet
SmCo
NdFeB magnets